IOTA/IOTA-ES occultation update for (128) Nemesis / TYC 6206-01136-1 event on 2021 Feb 16, 06:13 UT Visible from South America Summary ------- On 2021 Feb 16 UT, the 174.994813705688 km diameter asteroid (128) Nemesis will occult a 10.0 mag star in the constellation Scorpius for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.52 mag to 13.49 mag (the magnitude of the asteroid) for at most 8.7 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2021 Feb 16, 06:12 - 2021 Feb 16, 06:21 * geocentric midpoint of event [JD]: 2459261.76155417 * magnitude of target star: 10.01 * magnitude drop [mag]: 3.52 * estimated maximum duration [s]: 8.7 * Moon: 20 % sunlit, 134° distance * Sun: 81° distance * rough path description: South America Additional comments ------------------- double star The occultation path -------------------- * approximate projected width [km]: 217 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.005", 107°) * approx speed of asteroid's shadow [km/s]: 20.4527 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6206-01136-1 by 128 Nemesis on 2021 Feb 16 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude - 92 0 0 -23 58 44 6 12 23.8 1 110 -54 -25 2 17 -22 56 4 -25 10 20 -22 48 15 .... - 91 0 0 -24 19 25 6 12 23.9 2 110 -54 -25 23 5 -23 16 38 -25 31 9 -23 8 48 0.59 - 90 0 0 -24 40 21 6 12 24.1 3 109 -53 -25 44 9 -23 37 27 -25 52 14 -23 29 36 0.64 - 89 0 0 -25 1 32 6 12 24.5 4 109 -53 -26 5 27 -23 58 31 -26 13 33 -23 50 39 0.66 - 88 0 0 -25 22 58 6 12 24.9 4 108 -52 -26 27 1 -24 19 50 -26 35 8 -24 11 57 0.67 - 87 0 0 -25 44 38 6 12 25.5 5 108 -52 -26 48 48 -24 41 23 -26 56 56 -24 33 29 0.68 - 86 0 0 -26 6 32 6 12 26.2 6 107 -52 -27 10 49 -25 3 9 -27 18 57 -24 55 15 0.69 - 85 0 0 -26 28 38 6 12 27.0 7 107 -51 -27 33 2 -25 25 9 -27 41 12 -25 17 14 0.69 - 84 0 0 -26 50 57 6 12 27.9 8 107 -51 -27 55 28 -25 47 21 -28 3 39 -25 39 25 0.69 - 83 0 0 -27 13 28 6 12 28.9 9 106 -50 -28 18 6 -26 9 45 -28 26 17 -26 1 48 0.70 - 82 0 0 -27 36 9 6 12 30.0 10 106 -50 -28 40 54 -26 32 20 -28 49 6 -26 24 23 0.70 - 81 0 0 -27 59 2 6 12 31.2 11 105 -49 -29 3 53 -26 55 6 -29 12 6 -26 47 8 0.70 - 80 0 0 -28 22 4 6 12 32.5 12 105 -48 -29 27 2 -27 18 2 -29 35 16 -27 10 3 0.70 - 79 0 0 -28 45 16 6 12 33.9 13 104 -48 -29 50 20 -27 41 8 -29 58 35 -27 33 8 0.70 - 78 0 0 -29 8 36 6 12 35.4 14 104 -47 -30 13 46 -28 4 22 -30 22 2 -27 56 22 0.70 - 77 0 0 -29 32 4 6 12 37.1 15 103 -47 -30 37 21 -28 27 45 -30 45 37 -28 19 44 0.71 - 76 0 0 -29 55 40 6 12 38.8 16 102 -46 -31 1 2 -28 51 15 -31 9 20 -28 43 13 0.71 - 75 0 0 -30 19 23 6 12 40.6 17 102 -45 -31 24 51 -29 14 52 -31 33 8 -29 6 50 0.71 - 74 0 0 -30 43 11 6 12 42.5 18 101 -45 -31 48 45 -29 38 36 -31 57 3 -29 30 33 0.71 - 73 0 0 -31 7 5 6 12 44.5 19 101 -44 -32 12 44 -30 2 25 -32 21 3 -29 54 21 0.71 - 72 0 0 -31 31 4 6 12 46.6 20 100 -43 -32 36 47 -30 26 19 -32 45 7 -30 18 14 0.71 - 71 0 0 -31 55 7 6 12 48.8 21 99 -42 -33 0 55 -30 50 17 -33 9 15 -30 42 12 0.71 - 70 0 0 -32 19 13 6 12 51.1 22 99 -42 -33 25 5 -31 14 19 -33 33 26 -31 6 13 0.71 - 69 0 0 -32 43 22 6 12 53.4 22 98 -41 -33 49 18 -31 38 23 -33 57 40 -31 30 18 0.71 - 68 0 0 -33 7 32 6 12 55.9 23 98 -40 -34 13 33 -32 2 30 -34 21 55 -31 54 24 0.71 - 67 0 0 -33 31 44 6 12 58.4 24 97 -39 -34 37 48 -32 26 39 -34 46 11 -32 18 32 0.71 - 66 0 0 -33 55 57 6 13 1.0 25 96 -39 -35 2 4 -32 50 48 -35 10 27 -32 42 41 0.71 - 65 0 0 -34 20 9 6 13 3.7 26 95 -38 -35 26 20 -33 14 58 -35 34 43 -33 6 50 0.71 - 64 0 0 -34 44 21 6 13 6.4 27 95 -37 -35 50 34 -33 39 7 -35 58 58 -33 30 59 0.71 - 63 0 0 -35 8 31 6 13 9.2 28 94 -36 -36 14 47 -34 3 14 -36 23 11 -33 55 6 0.71 - 62 0 0 -35 32 39 6 13 12.1 29 93 -36 -36 38 57 -34 27 20 -36 47 21 -34 19 12 0.71 - 61 0 0 -35 56 44 6 13 15.1 29 92 -35 -37 3 4 -34 51 24 -37 11 28 -34 43 15 0.71 - 60 0 0 -36 20 46 6 13 18.1 30 92 -34 -37 27 7 -35 15 24 -37 35 32 -35 7 15 0.71 - 59 0 0 -36 44 44 6 13 21.2 31 91 -33 -37 51 6 -35 39 21 -37 59 31 -35 31 12 0.71 - 58 0 0 -37 8 36 6 13 24.4 32 90 -32 -38 15 0 -36 3 13 -38 23 25 -35 55 4 0.71 - 57 0 0 -37 32 24 6 13 27.6 33 89 -32 -38 38 48 -36 27 0 -38 47 13 -36 18 50 0.71 - 56 0 0 -37 56 5 6 13 30.8 33 88 -31 -39 2 29 -36 50 41 -39 10 54 -36 42 32 0.71 - 55 0 0 -38 19 40 6 13 34.1 34 87 -30 -39 26 4 -37 14 16 -39 34 29 -37 6 7 0.71 - 54 0 0 -38 43 8 6 13 37.5 35 86 -29 -39 49 31 -37 37 44 -39 57 56 -37 29 35 0.71 - 53 0 0 -39 6 27 6 13 40.9 36 85 -28 -40 12 50 -38 1 4 -40 21 15 -37 52 55 0.71 - 52 0 0 -39 29 39 6 13 44.4 36 84 -27 -40 36 0 -38 24 16 -40 44 25 -38 16 7 0.71 - 51 0 0 -39 52 41 6 13 47.8 37 83 -27 -40 59 1 -38 47 20 -41 7 26 -38 39 11 0.71 - 50 0 0 -40 15 34 6 13 51.4 38 82 -26 -41 21 52 -39 10 14 -41 30 17 -39 2 6 0.71 - 49 0 0 -40 38 17 6 13 54.9 39 81 -25 -41 44 33 -39 32 59 -41 52 57 -39 24 51 0.71 - 48 0 0 -41 0 49 6 13 58.5 39 80 -24 -42 7 3 -39 55 34 -42 15 27 -39 47 26 0.71 - 47 0 0 -41 23 10 6 14 2.2 40 79 -23 -42 29 21 -40 17 57 -42 37 45 -40 9 50 0.71 - 46 0 0 -41 45 20 6 14 5.8 41 78 -23 -42 51 28 -40 40 10 -42 59 51 -40 32 2 0.71 - 45 0 0 -42 7 17 6 14 9.5 41 77 -22 -43 13 23 -41 2 11 -43 21 45 -40 54 4 0.71 - 44 0 0 -42 29 2 6 14 13.2 42 76 -21 -43 35 4 -41 23 59 -43 43 26 -41 15 53 0.71 - 43 0 0 -42 50 35 6 14 17.0 43 75 -20 -43 56 33 -41 45 35 -44 4 54 -41 37 29 0.71 - 42 0 0 -43 11 54 6 14 20.7 43 73 -19 -44 17 48 -42 6 58 -44 26 9 -41 58 53 0.71 - 41 0 0 -43 32 59 6 14 24.5 44 72 -19 -44 38 49 -42 28 8 -44 47 9 -42 20 3 0.71 - 40 0 0 -43 53 51 6 14 28.3 44 71 -18 -44 59 35 -42 49 4 -45 7 55 -42 40 59 0.71 - 39 0 0 -44 14 28 6 14 32.1 45 70 -17 -45 20 7 -43 9 45 -45 28 27 -43 1 41 0.71 - 38 0 0 -44 34 50 6 14 35.9 46 68 -16 -45 40 25 -43 30 13 -45 48 43 -43 22 9 0.71 - 37 0 0 -44 54 57 6 14 39.7 46 67 -15 -46 0 26 -43 50 25 -46 8 44 -43 42 22 0.71 - 36 0 0 -45 14 49 6 14 43.5 47 66 -15 -46 20 13 -44 10 22 -46 28 30 -44 2 20 0.71 - 35 0 0 -45 34 25 6 14 47.4 47 64 -14 -46 39 43 -44 30 4 -46 47 59 -44 22 3 0.71 - 34 0 0 -45 53 46 6 14 51.2 48 63 -13 -46 58 57 -44 49 30 -47 7 13 -44 41 29 0.71 - 33 0 0 -46 12 50 6 14 55.1 48 62 -12 -47 17 55 -45 8 40 -47 26 10 -45 0 40 0.71 - 32 0 0 -46 31 38 6 14 58.9 49 60 -12 -47 36 37 -45 27 34 -47 44 51 -45 19 35 0.71 - 31 0 0 -46 50 9 6 15 2.7 49 59 -11 -47 55 1 -45 46 12 -48 3 15 -45 38 13 0.71 - 30 0 0 -47 8 23 6 15 6.6 49 57 -10 -48 13 9 -46 4 33 -48 21 22 -45 56 35 0.71 - 29 0 0 -47 26 21 6 15 10.4 50 56 -9 -48 31 0 -46 22 37 -48 39 11 -46 14 40 0.71 - 28 0 0 -47 44 1 6 15 14.2 50 54 -9 -48 48 33 -46 40 24 -48 56 44 -46 32 28 0.71 - 27 0 0 -48 1 25 6 15 18.1 51 53 -8 -49 5 49 -46 57 54 -49 13 59 -46 49 59 0.71 - 26 0 0 -48 18 30 6 15 21.9 51 51 -7 -49 22 48 -47 15 7 -49 30 56 -47 7 13 0.71 - 25 0 0 -48 35 19 6 15 25.7 51 50 -6 -49 39 29 -47 32 2 -49 47 36 -47 24 9 0.71 - 24 0 0 -48 51 49 6 15 29.5 52 48 -6 -49 55 52 -47 48 40 -50 3 58 -47 40 48 0.71 - 23 0 0 -49 8 2 6 15 33.2 52 46 -5 -50 11 57 -48 5 0 -50 20 3 -47 57 9 0.71 - 22 0 0 -49 23 57 6 15 37.0 52 45 -4 -50 27 44 -48 21 3 -50 35 49 -48 13 12 0.71 - 21 0 0 -49 39 35 6 15 40.8 52 43 -4 -50 43 14 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0.71 - 8 0 0 -52 35 21 6 16 28.1 54 21 5 -53 37 19 -51 34 11 -53 45 10 -51 26 33 0.71 - 7 0 0 -52 46 46 6 16 31.6 54 20 6 -53 48 37 -51 45 44 -53 56 27 -51 38 7 0.71 - 6 0 0 -52 57 54 6 16 35.1 55 18 7 -53 59 37 -51 56 59 -54 7 26 -51 49 23 0.71 - 5 0 0 -53 8 44 6 16 38.6 55 16 7 -54 10 20 -52 7 56 -54 18 8 -52 0 20 0.71 - 4 0 0 -53 19 16 6 16 42.0 54 14 8 -54 20 45 -52 18 35 -54 28 32 -52 11 1 0.71 - 3 0 0 -53 29 31 6 16 45.5 54 13 8 -54 30 53 -52 28 56 -54 38 39 -52 21 23 0.71 - 2 0 0 -53 39 28 6 16 48.9 54 11 9 -54 40 43 -52 39 0 -54 48 28 -52 31 28 0.71 - 1 0 0 -53 49 8 6 16 52.3 54 9 10 -54 50 15 -52 48 46 -54 58 0 -52 41 15 0.71 0 0 0 -53 58 30 6 16 55.6 54 8 10 -54 59 31 -52 58 15 -55 7 14 -52 50 44 0.71 1 0 0 -54 7 35 6 16 59.0 54 6 11 -55 8 29 -53 7 26 -55 16 12 -52 59 56 0.71 2 0 0 -54 16 22 6 17 2.3 54 4 11 -55 17 10 -53 16 20 -55 24 52 -53 8 51 0.71 3 0 0 -54 24 53 6 17 5.6 54 3 12 -55 25 34 -53 24 57 -55 33 15 -53 17 28 0.71 4 0 0 -54 33 6 6 17 8.9 54 1 13 -55 33 41 -53 33 16 -55 41 22 -53 25 48 0.71 5 0 0 -54 41 2 6 17 12.1 54 359 13 -55 41 32 -53 41 18 -55 49 11 -53 33 51 0.71 6 0 0 -54 48 41 6 17 15.3 54 358 14 -55 49 5 -53 49 3 -55 56 44 -53 41 36 0.71 7 0 0 -54 56 4 6 17 18.6 53 356 14 -55 56 22 -53 56 31 -56 3 59 -53 49 5 0.71 8 0 0 -55 3 9 6 17 21.7 53 354 15 -56 3 21 -54 3 41 -56 10 59 -53 56 16 0.71 9 0 0 -55 9 58 6 17 24.9 53 353 16 -56 10 5 -54 10 35 -56 17 41 -54 3 11 0.71 10 0 0 -55 16 30 6 17 28.1 53 351 16 -56 16 32 -54 17 12 -56 24 8 -54 9 48 0.71 11 0 0 -55 22 45 6 17 31.2 53 350 17 -56 22 42 -54 23 32 -56 30 17 -54 16 9 0.71 12 0 0 -55 28 44 6 17 34.3 53 348 17 -56 28 36 -54 29 36 -56 36 11 -54 22 13 0.71 13 0 0 -55 34 26 6 17 37.4 52 347 18 -56 34 14 -54 35 23 -56 41 48 -54 28 0 0.71 14 0 0 -55 39 52 6 17 40.5 52 345 18 -56 39 35 -54 40 53 -56 47 9 -54 33 31 0.71 15 0 0 -55 45 2 6 17 43.5 52 344 19 -56 44 41 -54 46 6 -56 52 14 -54 38 45 0.71 16 0 0 -55 49 55 6 17 46.5 52 342 20 -56 49 30 -54 51 3 -56 57 2 -54 43 43 0.71 17 0 0 -55 54 32 6 17 49.5 51 341 20 -56 54 3 -54 55 44 -57 1 35 -54 48 24 0.71 18 0 0 -55 58 53 6 17 52.5 51 339 21 -56 58 21 -55 0 8 -57 5 52 -54 52 48 0.71 19 0 0 -56 2 58 6 17 55.5 51 338 21 -57 2 22 -55 4 16 -57 9 53 -54 56 57 0.71 20 0 0 -56 6 46 6 17 58.4 51 336 22 -57 6 7 -55 8 8 -57 13 38 -55 0 49 0.71 21 0 0 -56 10 19 6 18 1.4 50 335 22 -57 9 37 -55 11 44 -57 17 7 -55 4 25 0.71 22 0 0 -56 13 36 6 18 4.3 50 333 23 -57 12 51 -55 15 3 -57 20 21 -55 7 44 0.71 23 0 0 -56 16 36 6 18 7.2 50 332 23 -57 15 49 -55 18 6 -57 23 19 -55 10 48 0.71 24 0 0 -56 19 21 6 18 10.0 49 331 24 -57 18 32 -55 20 53 -57 26 1 -55 13 35 0.71 25 0 0 -56 21 50 6 18 12.9 49 329 24 -57 20 59 -55 23 24 -57 28 28 -55 16 6 0.71 26 0 0 -56 24 3 6 18 15.7 49 328 25 -57 23 10 -55 25 39 -57 30 39 -55 18 21 0.71 27 0 0 -56 26 1 6 18 18.5 48 326 26 -57 25 6 -55 27 38 -57 32 35 -55 20 21 0.71 28 0 0 -56 27 42 6 18 21.3 48 325 26 -57 26 46 -55 29 21 -57 34 15 -55 22 4 0.71 29 0 0 -56 29 8 6 18 24.1 48 324 27 -57 28 11 -55 30 48 -57 35 39 -55 23 31 0.71 30 0 0 -56 30 18 6 18 26.9 47 322 27 -57 29 20 -55 31 59 -57 36 48 -55 24 42 0.71 31 0 0 -56 31 13 6 18 29.6 47 321 28 -57 30 14 -55 32 54 -57 37 42 -55 25 37 0.71 32 0 0 -56 31 52 6 18 32.3 47 320 28 -57 30 52 -55 33 33 -57 38 20 -55 26 17 0.71 33 0 0 -56 32 15 6 18 35.1 46 318 29 -57 31 15 -55 33 57 -57 38 43 -55 26 40 0.71 34 0 0 -56 32 22 6 18 37.8 46 317 29 -57 31 23 -55 34 4 -57 38 51 -55 26 48 0.71 35 0 0 -56 32 14 6 18 40.4 46 316 30 -57 31 15 -55 33 56 -57 38 43 -55 26 39 0.71 36 0 0 -56 31 50 6 18 43.1 45 315 30 -57 30 52 -55 33 32 -57 38 20 -55 26 15 0.71 37 0 0 -56 31 11 6 18 45.7 45 313 31 -57 30 13 -55 32 52 -57 37 41 -55 25 35 0.71 38 0 0 -56 30 16 6 18 48.3 44 312 31 -57 29 19 -55 31 56 -57 36 47 -55 24 39 0.71 39 0 0 -56 29 5 6 18 51.0 44 311 32 -57 28 9 -55 30 44 -57 35 37 -55 23 27 0.71 40 0 0 -56 27 39 6 18 53.5 44 310 32 -57 26 44 -55 29 16 -57 34 12 -55 21 59 0.71 41 0 0 -56 25 57 6 18 56.1 43 309 33 -57 25 3 -55 27 32 -57 32 32 -55 20 15 0.71 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39 35 -54 40 45 -56 47 9 -54 33 23 0.72 55 0 0 -55 34 23 6 19 30.3 37 293 39 -56 34 15 -54 35 16 -56 41 49 -54 27 53 0.72 56 0 0 -55 28 42 6 19 32.6 36 292 40 -56 28 38 -54 29 30 -56 36 13 -54 22 7 0.72 57 0 0 -55 22 44 6 19 34.9 36 291 40 -56 22 45 -54 23 28 -56 30 21 -54 16 4 0.72 58 0 0 -55 16 30 6 19 37.2 35 290 41 -56 16 36 -54 17 9 -56 24 13 -54 9 44 0.72 59 0 0 -55 10 0 6 19 39.5 35 289 41 -56 10 11 -54 10 33 -56 17 48 -54 3 8 0.72 60 0 0 -55 3 13 6 19 41.7 34 288 42 -56 3 29 -54 3 41 -56 11 7 -53 56 15 0.72 61 0 0 -54 56 9 6 19 43.9 34 287 42 -55 56 31 -53 56 32 -56 4 10 -53 49 6 0.72 62 0 0 -54 48 49 6 19 46.1 33 286 43 -55 49 17 -53 49 6 -55 56 56 -53 41 39 0.72 63 0 0 -54 41 12 6 19 48.3 33 285 43 -55 41 46 -53 41 24 -55 49 26 -53 33 56 0.72 64 0 0 -54 33 18 6 19 50.4 32 284 44 -55 33 59 -53 33 24 -55 41 39 -53 25 56 0.72 65 0 0 -54 25 8 6 19 52.6 32 283 44 -55 25 54 -53 25 8 -55 33 36 -53 17 38 0.72 66 0 0 -54 16 41 6 19 54.7 31 282 44 -55 17 33 -53 16 34 -55 25 16 -53 9 4 0.72 67 0 0 -54 7 56 6 19 56.8 30 281 45 -55 8 56 -53 7 44 -55 16 39 -53 0 13 0.72 68 0 0 -53 58 55 6 19 58.8 30 280 45 -55 0 1 -52 58 36 -55 7 45 -52 51 5 0.72 69 0 0 -53 49 37 6 20 0.9 29 279 46 -54 50 49 -52 49 11 -54 58 34 -52 41 39 0.72 70 0 0 -53 40 2 6 20 2.9 29 278 46 -54 41 21 -52 39 29 -54 49 7 -52 31 56 0.72 71 0 0 -53 30 9 6 20 4.9 28 277 46 -54 31 35 -52 29 30 -54 39 22 -52 21 56 0.72 72 0 0 -53 19 59 6 20 6.8 28 276 47 -54 21 33 -52 19 13 -54 29 20 -52 11 38 0.72 73 0 0 -53 9 32 6 20 8.8 27 275 47 -54 11 13 -52 8 39 -54 19 1 -52 1 4 0.72 74 0 0 -52 58 48 6 20 10.7 26 274 48 -54 0 35 -51 57 48 -54 8 25 -51 50 11 0.72 75 0 0 -52 47 46 6 20 12.5 26 273 48 -53 49 41 -51 46 39 -53 57 31 -51 39 2 0.72 76 0 0 -52 36 27 6 20 14.4 25 272 48 -53 38 29 -51 35 13 -53 46 21 -51 27 34 0.73 77 0 0 -52 24 50 6 20 16.2 25 271 49 -53 27 0 -51 23 29 -53 34 52 -51 15 50 0.73 78 0 0 -52 12 56 6 20 18.0 24 271 49 -53 15 13 -51 11 28 -53 23 7 -51 3 47 0.73 79 0 0 -52 0 44 6 20 19.8 23 270 50 -53 3 9 -50 59 9 -53 11 4 -50 51 28 0.73 80 0 0 -51 48 15 6 20 21.5 23 269 50 -52 50 48 -50 46 32 -52 58 43 -50 38 50 0.73 81 0 0 -51 35 28 6 20 23.2 22 268 50 -52 38 9 -50 33 38 -52 46 5 -50 25 55 0.73 82 0 0 -51 22 24 6 20 24.9 22 267 51 -52 25 12 -50 20 26 -52 33 9 -50 12 43 0.73 83 0 0 -51 9 2 6 20 26.5 21 266 51 -52 11 58 -50 6 57 -52 19 56 -49 59 13 0.73 84 0 0 -50 55 23 6 20 28.1 20 265 51 -51 58 26 -49 53 10 -52 6 25 -49 45 25 0.73 85 0 0 -50 41 26 6 20 29.6 20 265 51 -51 44 37 -49 39 6 -51 52 37 -49 31 20 0.73 86 0 0 -50 27 11 6 20 31.1 19 264 52 -51 30 30 -49 24 44 -51 38 31 -49 16 57 0.73 87 0 0 -50 12 39 6 20 32.6 18 263 52 -51 16 6 -49 10 5 -51 24 8 -49 2 17 0.73 88 0 0 -49 57 50 6 20 34.0 18 262 52 -51 1 24 -48 55 8 -51 9 27 -48 47 19 0.74 89 0 0 -49 42 43 6 20 35.4 17 261 53 -50 46 24 -48 39 54 -50 54 28 -48 32 4 0.74 90 0 0 -49 27 19 6 20 36.8 16 260 53 -50 31 7 -48 24 23 -50 39 12 -48 16 32 0.74 91 0 0 -49 11 37 6 20 38.1 16 260 53 -50 15 33 -48 8 34 -50 23 39 -48 0 42 0.74 92 0 0 -48 55 38 6 20 39.3 15 259 53 -49 59 42 -47 52 28 -50 7 49 -47 44 36 0.74 93 0 0 -48 39 22 6 20 40.5 14 258 53 -49 43 33 -47 36 5 -49 51 41 -47 28 12 0.74 94 0 0 -48 22 49 6 20 41.7 13 257 54 -49 27 7 -47 19 26 -49 35 16 -47 11 31 0.74 95 0 0 -48 6 0 6 20 42.8 13 256 54 -49 10 24 -47 2 29 -49 18 34 -46 54 34 0.75 96 0 0 -47 48 53 6 20 43.8 12 256 54 -48 53 24 -46 45 16 -49 1 35 -46 37 20 0.75 97 0 0 -47 31 30 6 20 44.8 11 255 54 -48 36 8 -46 27 46 -48 44 19 -46 19 50 0.75 98 0 0 -47 13 50 6 20 45.8 11 254 54 -48 18 35 -46 10 0 -48 26 47 -46 2 3 0.76 99 0 0 -46 55 54 6 20 46.7 10 253 54 -48 0 45 -45 51 58 -48 8 58 -45 44 0 0.76 100 0 0 -46 37 41 6 20 47.5 9 253 54 -47 42 39 -45 33 40 -47 50 53 -45 25 41 0.76 101 0 0 -46 19 13 6 20 48.3 8 252 54 -47 24 17 -45 15 6 -47 32 31 -45 7 6 0.77 102 0 0 -46 0 29 6 20 49.0 8 251 54 -47 5 39 -44 56 16 -47 13 54 -44 48 16 0.77 103 0 0 -45 41 30 6 20 49.6 7 251 54 -46 46 45 -44 37 11 -46 55 1 -44 29 10 0.78 104 0 0 -45 22 15 6 20 50.2 6 250 54 -46 27 36 -44 17 52 -46 35 52 -44 9 50 0.79 105 0 0 -45 2 45 6 20 50.7 5 249 54 -46 8 11 -43 58 17 -46 16 29 -43 50 15 0.80 106 0 0 -44 43 1 6 20 51.2 4 248 54 -45 48 32 -43 38 28 -45 56 50 -43 30 25 0.82 107 0 0 -44 23 2 6 20 51.6 4 248 54 -45 28 37 -43 18 24 -45 36 56 -43 10 21 0.84 108 0 0 -44 2 49 6 20 51.9 3 247 54 -45 8 29 -42 58 7 -45 16 48 -42 50 3 0.88 109 0 0 -43 42 22 6 20 52.1 2 246 54 -44 48 6 -42 37 36 -44 56 26 -42 29 31 0.94 110 0 0 -43 21 42 6 20 52.3 1 246 54 -44 27 30 -42 16 52 -44 35 50 -42 8 47 1.08 111 0 0 -43 0 48 6 20 52.4 0 245 54 -44 6 40 .. .. .. -44 15 1 .. .. .. 1.73 Uncertainty in time = +/- 1 secs Prediction of 2020 Dec 31.0 Data for the target star ------------------------ * name: TYC 6206-01136-1 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 20 12.8385 DE: -18 24 45.717 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 20 12.8386 DE: -18 24 45.718 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.0 * Diameter [mas]: 1.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (128) Nemesis asteroid class: ShapeModel approx. diameter [km]: 175 approx. diameter ["]: 0.079 distance from Earth [AU]: 3.04050 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2020 Dec 31 source of used astrometry: MPC, FASTT, TMO number of used observations: 2676 number of rejected observations: 23 time covered by the observations: 1960 Jan 26 - 2020 Jul 31 1 sigma uncertainty ellipse (major, minor, PA): 0.008", 0.005", 106.6° remarks: * orbital elements for (128)Nemesis : Mean anomaly = 215.14924067 deg Arg. of pericenter = 303.59060499 deg Long. of node = 76.23352937 deg Inclination = 6.24561501 deg Eccentricity = 0.12791914 Semimajor axis = 2.74838281 AU Perihelion dist = 2.39681204 AU Mag: H = 7.70, G = 0.15 Epoch of elements : MJD 59261.25900000 TDT (2021 Feb 16.2590) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2020Dec31,8.7,2021,2,16,6.2773,-0.10278,-0.56770,11.35958,-2.05572,-0.00582,0.00103,0.00000,0.00000 4.7325,-18.4621,89.36,-12.24,False TYC 6206-01136-1,16.33689958,-18.4126993,0.00,10.01,0.00,1.0,0,,16.35694613,-18.4620972 128,Nemesis,13.49,177.2,3.0405,0,0,2.310,-5.95,,8.0 0,215.0932,2021,2,16,303.5906,76.2335,6.2456,0.12792,2.74838,2.39681,7.70,5.0,0.15 1.063,0.0080,0.0050,107,0.0050,Known errors 20210216_1136-1,59214.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2020 Dec 31, 01:16 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org