IOTA/IOTA-ES occultation update for (154) Bertha / TYC 5842-00300-1 event on 2022 Jun 04, 08:40 UT Visible from South America Summary ------- On 2022 Jun 04 UT, the 186.4 km diameter asteroid (154) Bertha will occult a 10.2 mag star in the constellation Cetus 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 3.76 mag to 13.93 mag (the magnitude of the asteroid) for at most 8.850 seconds. This update is based on, 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: 2022 Jun 04, 08:35 - 2022 Jun 04, 08:45 * geocentric midpoint of event [JD]: 2459734.86137612 * magnitude of target star: 10.20 * magnitude drop [mag]: 3.76 * estimated maximum duration [s]: 8.850 * Moon: 21 % sunlit, 131° distance * Sun: 79° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 188 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.002", 49°) * approx speed of asteroid's shadow [km/s]: 21.0551 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5842-00300-1 by 154 Bertha on 2022 Jun 4 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 -109 0 0 - 4 43 46 8 35 23.3 1 108 -64 - 5 37 19 - 3 50 7 - 5 44 0 - 3 43 25 .... -108 0 0 - 5 3 13 8 35 23.4 2 108 -63 - 5 56 42 - 4 9 38 - 6 3 22 - 4 2 56 -0.02 -107 0 0 - 5 22 24 8 35 23.6 3 108 -63 - 6 15 49 - 4 28 53 - 6 22 29 - 4 22 12 -0.06 -106 0 0 - 5 41 19 8 35 23.9 4 108 -62 - 6 34 40 - 4 47 52 - 6 41 19 - 4 41 11 -0.08 -105 0 0 - 5 59 57 8 35 24.4 5 108 -61 - 6 53 14 - 5 6 34 - 6 59 52 - 4 59 54 -0.09 -104 0 0 - 6 18 19 8 35 24.9 6 108 -61 - 7 11 31 - 5 24 59 - 7 18 9 - 5 18 20 -0.10 -103 0 0 - 6 36 22 8 35 25.5 7 108 -60 - 7 29 31 - 5 43 7 - 7 36 8 - 5 36 28 -0.10 -102 0 0 - 6 54 9 8 35 26.2 8 107 -59 - 7 47 13 - 6 0 58 - 7 53 50 - 5 54 19 -0.11 -101 0 0 - 7 11 37 8 35 27.0 9 107 -59 - 8 4 37 - 6 18 31 - 8 11 14 - 6 11 52 -0.11 -100 0 0 - 7 28 48 8 35 27.9 10 107 -58 - 8 21 44 - 6 35 45 - 8 28 20 - 6 29 7 -0.11 - 99 0 0 - 7 45 39 8 35 28.9 11 107 -57 - 8 38 31 - 6 52 41 - 8 45 7 - 6 46 4 -0.11 - 98 0 0 - 8 2 13 8 35 30.0 12 107 -57 - 8 55 0 - 7 9 18 - 9 1 35 - 7 2 42 -0.11 - 97 0 0 - 8 18 27 8 35 31.2 13 107 -56 - 9 11 10 - 7 25 36 - 9 17 45 - 7 19 0 -0.12 - 96 0 0 - 8 34 21 8 35 32.5 14 107 -55 - 9 27 1 - 7 41 35 - 9 33 35 - 7 35 0 -0.12 - 95 0 0 - 8 49 57 8 35 33.9 15 106 -54 - 9 42 32 - 7 57 15 - 9 49 5 - 7 50 40 -0.12 - 94 0 0 - 9 5 12 8 35 35.4 16 106 -54 - 9 57 43 - 8 12 34 -10 4 16 - 8 6 0 -0.12 - 93 0 0 - 9 20 8 8 35 36.9 17 106 -53 -10 12 35 - 8 27 34 -10 19 7 - 8 21 0 -0.12 - 92 0 0 - 9 34 43 8 35 38.6 18 106 -52 -10 27 6 - 8 42 13 -10 33 38 - 8 35 39 -0.12 - 91 0 0 - 9 48 58 8 35 40.3 19 106 -51 -10 41 17 - 8 56 32 -10 47 48 - 8 49 59 -0.12 - 90 0 0 -10 2 52 8 35 42.2 20 106 -50 -10 55 7 - 9 10 30 -11 1 38 - 9 3 57 -0.12 - 89 0 0 -10 16 25 8 35 44.1 21 106 -50 -11 8 37 - 9 24 7 -11 15 7 - 9 17 35 -0.12 - 88 0 0 -10 29 38 8 35 46.1 22 105 -49 -11 21 46 - 9 37 24 -11 28 16 - 9 30 52 -0.12 - 87 0 0 -10 42 29 8 35 48.2 23 105 -48 -11 34 33 - 9 50 19 -11 41 3 - 9 43 48 -0.12 - 86 0 0 -10 54 59 8 35 50.4 24 105 -47 -11 46 59 -10 2 52 -11 53 29 - 9 56 22 -0.12 - 85 0 0 -11 7 8 8 35 52.6 25 105 -46 -11 59 4 -10 15 5 -12 5 33 -10 8 34 -0.12 - 84 0 0 -11 18 54 8 35 55.0 26 105 -45 -12 10 48 -10 26 55 -12 17 16 -10 20 25 -0.12 - 83 0 0 -11 30 20 8 35 57.4 27 105 -44 -12 22 9 -10 38 24 -12 28 37 -10 31 54 -0.13 - 82 0 0 -11 41 23 8 35 59.9 28 104 -44 -12 33 9 -10 49 30 -12 39 36 -10 43 1 -0.13 - 81 0 0 -11 52 4 8 36 2.5 29 104 -43 -12 43 47 -11 0 15 -12 50 14 -10 53 46 -0.13 - 80 0 0 -12 2 23 8 36 5.1 30 104 -42 -12 54 2 -11 10 37 -13 0 29 -11 4 9 -0.13 - 79 0 0 -12 12 19 8 36 7.9 31 104 -41 -13 3 56 -11 20 37 -13 10 22 -11 14 9 -0.13 - 78 0 0 -12 21 54 8 36 10.7 32 104 -40 -13 13 27 -11 30 14 -13 19 53 -11 23 46 -0.13 - 77 0 0 -12 31 5 8 36 13.6 33 104 -39 -13 22 36 -11 39 29 -13 29 1 -11 33 1 -0.13 - 76 0 0 -12 39 55 8 36 16.6 34 103 -38 -13 31 22 -11 48 20 -13 37 47 -11 41 54 -0.13 - 75 0 0 -12 48 21 8 36 19.6 35 103 -37 -13 39 46 -11 56 50 -13 46 11 -11 50 23 -0.13 - 74 0 0 -12 56 25 8 36 22.7 36 103 -37 -13 47 47 -12 4 56 -13 54 11 -11 58 30 -0.13 - 73 0 0 -13 4 5 8 36 25.9 37 103 -36 -13 55 25 -12 12 39 -14 1 49 -12 6 14 -0.13 - 72 0 0 -13 11 23 8 36 29.1 38 103 -35 -14 2 41 -12 19 59 -14 9 4 -12 13 34 -0.13 - 71 0 0 -13 18 18 8 36 32.4 39 103 -34 -14 9 33 -12 26 57 -14 15 57 -12 20 31 -0.13 - 70 0 0 -13 24 50 8 36 35.8 40 103 -33 -14 16 3 -12 33 30 -14 22 26 -12 27 6 -0.13 - 69 0 0 -13 30 58 8 36 39.3 41 102 -32 -14 22 9 -12 39 41 -14 28 32 -12 33 16 -0.13 - 68 0 0 -13 36 43 8 36 42.8 42 102 -31 -14 27 52 -12 45 28 -14 34 15 -12 39 4 -0.13 - 67 0 0 -13 42 5 8 36 46.4 43 102 -30 -14 33 13 -12 50 52 -14 39 35 -12 44 28 -0.13 - 66 0 0 -13 47 4 8 36 50.0 44 102 -29 -14 38 10 -12 55 52 -14 44 32 -12 49 28 -0.13 - 65 0 0 -13 51 39 8 36 53.7 45 102 -28 -14 42 43 -13 0 29 -14 49 5 -12 54 6 -0.13 - 64 0 0 -13 55 51 8 36 57.5 46 102 -27 -14 46 54 -13 4 42 -14 53 16 -12 58 19 -0.13 - 63 0 0 -13 59 40 8 37 1.3 47 102 -27 -14 50 41 -13 8 32 -14 57 3 -13 2 9 -0.13 - 62 0 0 -14 3 4 8 37 5.2 48 102 -26 -14 54 5 -13 11 58 -15 0 26 -13 5 35 -0.13 - 61 0 0 -14 6 6 8 37 9.2 49 102 -25 -14 57 5 -13 15 0 -15 3 26 -13 8 37 -0.13 - 60 0 0 -14 8 43 8 37 13.2 50 101 -24 -14 59 41 -13 17 39 -15 6 3 -13 11 16 -0.13 - 59 0 0 -14 10 57 8 37 17.3 51 101 -23 -15 1 55 -13 19 54 -15 8 16 -13 13 31 -0.13 - 58 0 0 -14 12 48 8 37 21.4 52 101 -22 -15 3 45 -13 21 45 -15 10 6 -13 15 22 -0.13 - 57 0 0 -14 14 14 8 37 25.5 53 101 -21 -15 5 11 -13 23 12 -15 11 32 -13 16 49 -0.13 - 56 0 0 -14 15 17 8 37 29.8 54 101 -20 -15 6 13 -13 24 15 -15 12 34 -13 17 52 -0.13 - 55 0 0 -14 15 57 8 37 34.1 55 101 -19 -15 6 52 -13 24 55 -15 13 13 -13 18 32 -0.13 - 54 0 0 -14 16 12 8 37 38.4 56 101 -18 -15 7 8 -13 25 10 -15 13 29 -13 18 47 -0.13 - 53 0 0 -14 16 4 8 37 42.8 57 101 -17 -15 6 59 -13 25 2 -15 13 21 -13 18 39 -0.13 - 52 0 0 -14 15 32 8 37 47.2 58 102 -16 -15 6 28 -13 24 29 -15 12 49 -13 18 7 -0.13 - 51 0 0 -14 14 36 8 37 51.7 59 102 -15 -15 5 32 -13 23 33 -15 11 53 -13 17 10 -0.13 - 50 0 0 -14 13 16 8 37 56.2 60 102 -15 -15 4 13 -13 22 13 -15 10 34 -13 15 50 -0.13 - 49 0 0 -14 11 32 8 38 0.8 61 102 -14 -15 2 30 -13 20 29 -15 8 51 -13 14 6 -0.13 - 48 0 0 -14 9 25 8 38 5.4 62 102 -13 -15 0 23 -13 18 21 -15 6 45 -13 11 58 -0.13 - 47 0 0 -14 6 54 8 38 10.1 63 102 -12 -14 57 53 -13 15 49 -15 4 15 -13 9 25 -0.13 - 46 0 0 -14 3 59 8 38 14.8 64 103 -11 -14 54 59 -13 12 53 -15 1 21 -13 6 29 -0.13 - 45 0 0 -14 0 40 8 38 19.5 64 103 -10 -14 51 42 -13 9 33 -14 58 4 -13 3 9 -0.13 - 44 0 0 -13 56 58 8 38 24.3 65 103 -9 -14 48 1 -13 5 49 -14 54 22 -12 59 25 -0.13 - 43 0 0 -13 52 51 8 38 29.2 66 104 -8 -14 43 56 -13 1 41 -14 50 18 -12 55 17 -0.13 - 42 0 0 -13 48 21 8 38 34.0 67 104 -7 -14 39 27 -12 57 9 -14 45 49 -12 50 45 -0.13 - 41 0 0 -13 43 27 8 38 39.0 68 105 -6 -14 34 35 -12 52 14 -14 40 58 -12 45 49 -0.13 - 40 0 0 -13 38 10 8 38 43.9 69 105 -5 -14 29 19 -12 46 54 -14 35 42 -12 40 30 -0.13 - 39 0 0 -13 32 29 8 38 48.9 70 106 -4 -14 23 40 -12 41 11 -14 30 3 -12 34 46 -0.13 - 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0 41 43 8 43 16.9 54 239 47 - 1 36 7 0 12 48 - 1 42 54 0 19 37 -0.13 13 0 0 - 0 18 59 8 43 21.6 53 239 48 - 1 13 26 0 35 36 - 1 20 13 0 42 25 -0.13 14 0 0 0 3 57 8 43 26.2 52 240 49 - 0 50 34 0 58 34 - 0 57 21 1 5 24 -0.13 15 0 0 0 27 2 8 43 30.7 51 240 51 - 0 27 31 1 21 43 - 0 34 19 1 28 33 -0.13 16 0 0 0 50 17 8 43 35.2 50 240 52 - 0 4 19 1 45 0 - 0 11 7 1 51 51 -0.13 17 0 0 1 13 41 8 43 39.6 49 240 53 0 19 3 2 8 27 0 12 14 2 15 18 -0.13 18 0 0 1 37 14 8 43 43.9 48 241 54 0 42 33 2 32 3 0 35 44 2 38 54 -0.13 19 0 0 2 0 55 8 43 48.2 47 241 55 1 6 11 2 55 46 0 59 22 3 2 37 -0.13 20 0 0 2 24 43 8 43 52.3 45 241 56 1 29 57 3 19 36 1 23 7 3 26 28 -0.13 21 0 0 2 48 38 8 43 56.4 44 241 57 1 53 50 3 43 33 1 47 0 3 50 25 -0.13 22 0 0 3 12 39 8 44 0.5 43 241 58 2 17 49 4 7 36 2 10 58 4 14 28 -0.13 23 0 0 3 36 45 8 44 4.4 42 242 59 2 41 53 4 31 44 2 35 3 4 38 36 -0.13 24 0 0 4 0 56 8 44 8.3 41 242 60 3 6 3 4 55 57 2 59 12 5 2 49 -0.13 25 0 0 4 25 12 8 44 12.1 40 242 61 3 30 17 5 20 14 3 23 26 5 27 7 -0.13 26 0 0 4 49 31 8 44 15.7 39 242 62 3 54 35 5 44 35 3 47 44 5 51 28 -0.13 27 0 0 5 13 54 8 44 19.3 38 242 63 4 18 57 6 8 58 4 12 6 6 15 51 -0.13 28 0 0 5 38 19 8 44 22.9 37 242 64 4 43 21 6 33 24 4 36 29 6 40 17 -0.13 29 0 0 6 2 46 8 44 26.3 36 243 65 5 7 47 6 57 52 5 0 55 7 4 45 -0.13 30 0 0 6 27 14 8 44 29.6 35 243 66 5 32 14 7 22 20 5 25 23 7 29 14 -0.12 31 0 0 6 51 42 8 44 32.9 34 243 67 5 56 42 7 46 49 5 49 51 7 53 43 -0.12 32 0 0 7 16 11 8 44 36.0 32 243 68 6 21 11 8 11 18 6 14 19 8 18 11 -0.12 33 0 0 7 40 39 8 44 39.1 31 243 69 6 45 38 8 35 46 6 38 47 8 42 39 -0.12 34 0 0 8 5 5 8 44 42.0 30 244 70 7 10 5 9 0 13 7 3 14 9 7 6 -0.12 35 0 0 8 29 30 8 44 44.9 29 244 71 7 34 30 9 24 37 7 27 39 9 31 30 -0.12 36 0 0 8 53 52 8 44 47.6 28 244 72 7 58 53 9 48 59 7 52 2 9 55 52 -0.12 37 0 0 9 18 12 8 44 50.3 27 244 73 8 23 13 10 13 17 8 16 21 10 20 11 -0.12 38 0 0 9 42 27 8 44 52.9 26 244 74 8 47 29 10 37 32 8 40 38 10 44 25 -0.12 39 0 0 10 6 38 8 44 55.3 25 245 75 9 11 41 11 1 42 9 4 50 11 8 35 -0.12 40 0 0 10 30 45 8 44 57.7 24 245 76 9 35 49 11 25 47 9 28 58 11 32 40 -0.12 41 0 0 10 54 46 8 44 59.9 23 245 76 9 59 51 11 49 47 9 53 0 11 56 40 -0.12 42 0 0 11 18 40 8 45 2.1 22 245 77 10 23 47 12 13 41 10 16 57 12 20 33 -0.12 43 0 0 11 42 29 8 45 4.1 21 245 78 10 47 37 12 37 27 10 40 47 12 44 20 -0.12 44 0 0 12 6 10 8 45 6.1 20 246 79 11 11 20 13 1 7 11 4 30 13 7 59 -0.12 45 0 0 12 29 44 8 45 7.9 19 246 79 11 34 56 13 24 38 11 28 6 13 31 30 -0.12 46 0 0 12 53 9 8 45 9.7 17 246 80 11 58 23 13 48 2 11 51 34 13 54 53 -0.12 47 0 0 13 16 26 8 45 11.3 16 246 81 12 21 42 14 11 16 12 14 53 14 18 7 -0.12 48 0 0 13 39 33 8 45 12.8 15 247 81 12 44 52 14 34 21 12 38 3 14 41 12 -0.12 49 0 0 14 2 31 8 45 14.3 14 247 81 13 7 52 14 57 17 13 1 4 15 4 7 -0.12 50 0 0 14 25 19 8 45 15.6 13 247 82 13 30 43 15 20 2 13 23 54 15 26 52 -0.12 51 0 0 14 47 56 8 45 16.8 12 247 82 13 53 22 15 42 36 13 46 34 15 49 26 -0.12 52 0 0 15 10 21 8 45 17.9 11 248 82 14 15 51 16 4 59 14 9 3 16 11 48 -0.12 53 0 0 15 32 36 8 45 18.9 10 248 82 14 38 8 16 27 10 14 31 21 16 33 59 -0.12 54 0 0 15 54 38 8 45 19.9 9 248 81 15 0 14 16 49 9 14 53 27 16 55 58 -0.12 55 0 0 16 16 28 8 45 20.7 8 248 81 15 22 7 17 10 56 15 15 20 17 17 44 -0.12 56 0 0 16 38 5 8 45 21.4 7 249 81 15 43 47 17 32 29 15 37 1 17 39 17 -0.12 57 0 0 16 59 28 8 45 22.0 6 249 80 16 5 14 17 53 49 15 58 28 18 0 37 -0.12 58 0 0 17 20 39 8 45 22.6 5 249 79 16 26 28 18 14 56 16 19 42 18 21 43 -0.11 59 0 0 17 41 35 8 45 23.0 4 250 79 16 47 28 18 35 49 16 40 43 18 42 35 -0.11 60 0 0 18 2 17 8 45 23.3 3 250 78 17 8 13 18 56 27 17 1 29 19 3 13 -0.11 61 0 0 18 22 44 8 45 23.5 2 250 77 17 28 44 19 16 50 17 22 0 19 23 36 -0.10 62 0 0 18 42 56 8 45 23.7 1 251 76 17 49 0 19 36 58 17 42 16 19 43 44 -0.07 Uncertainty in time = +/- 1 secs Prediction of 2022 Apr 15.8 Data for the target star ------------------------ * name: TYC 5842-00300-1 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 13 00.9762 DE: -18 12 14.718 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 13 00.9764 DE: -18 12 14.716 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (154) Bertha asteroid class: approx. diameter [km]: 186 approx. diameter ["]: 0.075 distance from Earth [AU]: 3.42210 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2022 Feb 04 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.009", 0.002", 49.104° remarks: * orbital elements for (154)Bertha : Mean anomaly = 130.8949068856 deg Arg. of pericenter = 162.0126458148 deg Long. of node = 36.6390517022 deg Inclination = 20.9753004711 deg Eccentricity = 0.0761191452 Semimajor axis = 3.2007935698 AU Perihelion dist = 2.9571518992 AU Mag: H = 7.71, G = 0.15 Epoch of elements : MJD 59734.36145833 TDT (2022 Jun 04.3615) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562022Feb04,8.85,2022,6,4,8.673027,-0.030357,0.128696,11.609171,2.541392,-0.004930,-0.002663,0.000000,0.000000 -19.3338,-18.0799,49.49,22.45,False TYC 5842-00300-1,0.21693788,-18.2040879,0.00,10.20,0.00,0.0,0,,0.23560281,-18.0798773,3.76,0.00,0,0,0 154,Bertha,13.93,186.4,3.4221,0,0,2.093,6.54,,10.4 0,130.8327,2022,6,4,162.0126,36.6391,20.9753,0.07612,3.20079,2.95715,7.71,5.0,0.15 1.062,0.0093,0.0016,49,0.0047,Known errors,-1.00,-1,-1,-1 20220604_0300-1,59684.83 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Apr 15, 20:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org