IOTA/IOTA-ES occultation update for (201) Penelope / UCAC4 485-051820 event on 2022 Jan 30, 22:49 UT Visible from India, Arabia, Europe Summary ------- On 2022 Jan 30 UT, the 70.7 km diameter asteroid (201) Penelope will occult a 12.4 mag star in the constellation Leo for observers along a path across India, Arabia, Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.28 mag to 13.25 mag (the magnitude of the asteroid) for at most 6.250 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: 96 * date and approx. time of event: 2022 Jan 30, 22:40 - 2022 Jan 30, 22:59 * geocentric midpoint of event [JD]: 2459610.45125417 * magnitude of target star: 12.37 * magnitude drop [mag]: 1.28 * estimated maximum duration [s]: 6.250 * Moon: 2 % sunlit, 132° distance * Sun: 150° distance * rough path description: India, Arabia, Europe The occultation path -------------------- * approximate projected width [km]: 73 * 1 sigma uncertainty interval [path widths]: +/- 0.41 * 1 sigma uncertainty interval [seconds]: +/- 3.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.018) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.017", 107°) * approx speed of asteroid's shadow [km/s]: 11.3075 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 485-051820 by 201 Penelope on 2022 Jan 30 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 - 49 0 0 44 45 51 22 58 49.0 0 81 -28 45 5 58 44 25 47 45 22 32 44 9 18 .... - 48 0 0 44 52 40 22 58 48.9 1 82 -29 45 12 45 44 32 37 45 29 17 44 16 9 -0.23 - 47 0 0 44 59 5 22 58 48.7 2 82 -29 45 19 9 44 39 4 45 35 40 44 22 37 -0.25 - 46 0 0 45 5 6 22 58 48.5 3 83 -30 45 25 8 44 45 6 45 41 38 44 28 41 -0.26 - 45 0 0 45 10 44 22 58 48.1 3 84 -31 45 30 45 44 50 45 45 47 13 44 34 21 -0.26 - 44 0 0 45 15 58 22 58 47.6 4 84 -31 45 35 58 44 56 1 45 52 26 44 39 38 -0.26 - 43 0 0 45 20 50 22 58 47.1 5 85 -32 45 40 48 45 0 53 45 57 15 44 44 31 -0.27 - 42 0 0 45 25 17 22 58 46.5 5 86 -33 45 45 15 45 5 22 46 1 40 44 49 1 -0.27 - 41 0 0 45 29 22 22 58 45.7 6 86 -33 45 49 19 45 9 28 46 5 44 44 53 7 -0.27 - 40 0 0 45 33 4 22 58 44.9 7 87 -34 45 52 59 45 13 10 46 9 24 44 56 51 -0.27 - 39 0 0 45 36 23 22 58 44.1 7 88 -35 45 56 18 45 16 30 46 12 41 45 0 11 -0.27 - 38 0 0 45 39 19 22 58 43.1 8 89 -36 45 59 13 45 19 27 46 15 36 45 3 8 -0.27 - 37 0 0 45 41 52 22 58 42.0 9 89 -36 46 1 46 45 22 1 46 18 8 45 5 42 -0.27 - 36 0 0 45 44 3 22 58 40.9 10 90 -37 46 3 56 45 24 12 46 20 18 45 7 54 -0.27 - 35 0 0 45 45 51 22 58 39.7 10 91 -38 46 5 43 45 26 0 46 22 5 45 9 43 -0.27 - 34 0 0 45 47 16 22 58 38.3 11 91 -38 46 7 8 45 27 26 46 23 30 45 11 8 -0.27 - 33 0 0 45 48 19 22 58 37.0 12 92 -39 46 8 11 45 28 29 46 24 33 45 12 12 -0.27 - 32 0 0 45 48 59 22 58 35.5 12 93 -40 46 8 51 45 29 9 46 25 13 45 12 52 -0.27 - 31 0 0 45 49 17 22 58 33.9 13 94 -40 46 9 9 45 29 27 46 25 31 45 13 10 -0.28 - 30 0 0 45 49 13 22 58 32.3 14 94 -41 46 9 5 45 29 23 46 25 27 45 13 5 -0.28 - 29 0 0 45 48 46 22 58 30.6 14 95 -41 46 8 38 45 28 55 46 25 0 45 12 38 -0.28 - 28 0 0 45 47 57 22 58 28.8 15 96 -42 46 7 49 45 28 6 46 24 11 45 11 48 -0.28 - 27 0 0 45 46 45 22 58 26.9 16 96 -43 46 6 38 45 26 54 46 23 0 45 10 36 -0.28 - 26 0 0 45 45 11 22 58 24.9 16 97 -43 46 5 4 45 25 19 46 21 27 45 9 1 -0.28 - 25 0 0 45 43 14 22 58 22.8 17 98 -44 46 3 8 45 23 22 46 19 32 45 7 3 -0.28 - 24 0 0 45 40 56 22 58 20.7 18 99 -45 46 0 50 45 21 3 46 17 14 45 4 43 -0.28 - 23 0 0 45 38 14 22 58 18.5 19 99 -45 45 58 10 45 18 21 46 14 34 45 2 1 -0.28 - 22 0 0 45 35 11 22 58 16.2 19 100 -46 45 55 7 45 15 16 46 11 32 44 58 56 -0.28 - 21 0 0 45 31 45 22 58 13.8 20 101 -47 45 51 42 45 11 49 46 8 8 44 55 28 -0.28 - 20 0 0 45 27 56 22 58 11.3 21 102 -47 45 47 54 45 8 0 46 4 21 44 51 37 -0.28 - 19 0 0 45 23 45 22 58 8.8 21 102 -48 45 43 44 45 3 47 46 0 12 44 47 24 -0.28 - 18 0 0 45 19 11 22 58 6.1 22 103 -49 45 39 12 44 59 13 45 55 41 44 42 49 -0.28 - 17 0 0 45 14 15 22 58 3.4 23 104 -49 45 34 17 44 54 15 45 50 47 44 37 50 -0.28 - 16 0 0 45 8 56 22 58 0.6 23 104 -50 45 28 59 44 48 55 45 45 30 44 32 29 -0.28 - 15 0 0 45 3 15 22 57 57.6 24 105 -51 45 23 19 44 43 12 45 39 51 44 26 44 -0.28 - 14 0 0 44 57 10 22 57 54.7 25 106 -51 45 17 17 44 37 6 45 33 50 44 20 37 -0.28 - 13 0 0 44 50 43 22 57 51.6 26 107 -52 45 10 51 44 30 37 45 27 26 44 14 7 -0.28 - 12 0 0 44 43 53 22 57 48.4 26 107 -52 45 4 3 44 23 45 45 20 39 44 7 14 -0.28 - 11 0 0 44 36 40 22 57 45.1 27 108 -53 44 56 51 44 16 30 45 13 29 43 59 57 -0.28 - 10 0 0 44 29 4 22 57 41.8 28 109 -54 44 49 17 44 8 52 45 5 56 43 52 18 -0.28 - 9 0 0 44 21 4 22 57 38.3 28 110 -54 44 41 20 44 0 51 44 58 0 43 44 15 -0.28 - 8 0 0 44 12 42 22 57 34.8 29 110 -55 44 32 59 43 52 26 44 49 42 43 35 49 -0.28 - 7 0 0 44 3 56 22 57 31.2 30 111 -56 44 24 15 43 43 39 44 41 0 43 26 59 -0.28 - 6 0 0 43 54 47 22 57 27.4 30 112 -56 44 15 8 43 34 27 44 31 54 43 17 46 -0.28 - 5 0 0 43 45 14 22 57 23.6 31 113 -57 44 5 38 43 24 52 44 22 26 43 8 9 -0.28 - 4 0 0 43 35 18 22 57 19.7 32 113 -57 43 55 44 43 14 54 44 12 34 42 58 9 -0.28 - 3 0 0 43 24 58 22 57 15.7 33 114 -58 43 45 27 43 4 31 44 2 18 42 47 45 -0.28 - 2 0 0 43 14 14 22 57 11.6 33 115 -59 43 34 45 42 53 45 43 51 39 42 36 56 -0.28 - 1 0 0 43 3 7 22 57 7.4 34 116 -59 43 23 40 42 42 35 43 40 36 42 25 44 -0.28 0 0 0 42 51 35 22 57 3.1 35 116 -60 43 12 11 42 31 1 43 29 9 42 14 8 -0.28 1 0 0 42 39 40 22 56 58.6 36 117 -60 43 0 18 42 19 3 43 17 19 42 2 8 -0.29 2 0 0 42 27 20 22 56 54.1 36 118 -61 42 48 1 42 6 40 43 5 4 41 49 43 -0.29 3 0 0 42 14 36 22 56 49.5 37 119 -62 42 35 20 41 53 54 42 52 25 41 36 54 -0.29 4 0 0 42 1 27 22 56 44.8 38 120 -62 42 22 15 41 40 43 42 39 22 41 23 41 -0.29 5 0 0 41 47 55 22 56 40.0 39 120 -63 42 8 45 41 27 7 42 25 54 41 10 3 -0.29 6 0 0 41 33 57 22 56 35.0 39 121 -63 41 54 50 41 13 7 42 12 2 40 56 0 -0.29 7 0 0 41 19 36 22 56 30.0 40 122 -64 41 40 31 40 58 42 41 57 46 40 41 33 -0.29 8 0 0 41 4 49 22 56 24.8 41 123 -64 41 25 48 40 43 52 41 43 5 40 26 41 -0.29 9 0 0 40 49 38 22 56 19.6 42 124 -65 41 10 40 40 28 38 41 27 59 40 11 24 -0.29 10 0 0 40 34 1 22 56 14.2 42 124 -66 40 55 6 40 12 59 41 12 28 39 55 42 -0.29 11 0 0 40 18 0 22 56 8.7 43 125 -66 40 39 8 39 56 55 40 56 33 39 39 36 -0.29 12 0 0 40 1 34 22 56 3.1 44 126 -67 40 22 46 39 40 25 40 40 13 39 23 4 -0.29 13 0 0 39 44 43 22 55 57.4 45 127 -67 40 5 58 39 23 31 40 23 27 39 6 7 -0.29 14 0 0 39 27 27 22 55 51.6 45 128 -68 39 48 45 39 6 12 40 6 17 38 48 45 -0.29 15 0 0 39 9 46 22 55 45.6 46 129 -68 39 31 7 38 48 27 39 48 42 38 30 58 -0.29 16 0 0 38 51 39 22 55 39.6 47 129 -68 39 13 3 38 30 18 39 30 41 38 12 46 -0.29 17 0 0 38 33 8 22 55 33.4 48 130 -69 38 54 35 38 11 43 39 12 15 37 54 9 -0.29 18 0 0 38 14 11 22 55 27.1 48 131 -69 38 35 42 37 52 43 38 53 25 37 35 6 -0.29 19 0 0 37 54 49 22 55 20.7 49 132 -70 38 16 23 37 33 18 38 34 9 37 15 38 -0.29 20 0 0 37 35 2 22 55 14.2 50 133 -70 37 56 39 37 13 28 38 14 27 36 55 45 -0.29 21 0 0 37 14 50 22 55 7.5 51 134 -70 37 36 30 36 53 12 37 54 21 36 35 27 -0.29 22 0 0 36 54 13 22 55 0.8 52 135 -70 37 15 56 36 32 32 37 33 50 36 14 44 -0.29 23 0 0 36 33 10 22 54 53.9 52 136 -71 36 54 57 36 11 26 37 12 53 35 53 36 -0.29 24 0 0 36 11 43 22 54 46.9 53 137 -71 36 33 33 35 49 56 36 51 32 35 32 3 -0.29 25 0 0 35 49 51 22 54 39.7 54 138 -71 36 11 44 35 28 0 36 29 45 35 10 5 -0.29 26 0 0 35 27 34 22 54 32.5 55 139 -71 35 49 30 35 5 40 36 7 34 34 47 42 -0.29 27 0 0 35 4 52 22 54 25.1 56 140 -71 35 26 51 34 42 55 35 44 58 34 24 55 -0.29 28 0 0 34 41 46 22 54 17.6 56 141 -71 35 3 48 34 19 46 35 21 58 34 1 43 -0.29 29 0 0 34 18 15 22 54 10.0 57 142 -71 34 40 21 33 56 12 34 58 33 33 38 7 -0.29 30 0 0 33 54 20 22 54 2.2 58 143 -71 34 16 29 33 32 14 34 34 43 33 14 6 -0.29 31 0 0 33 30 1 22 53 54.4 59 145 -71 33 52 13 33 7 52 34 10 30 32 49 42 -0.29 32 0 0 33 5 18 22 53 46.4 60 146 -71 33 27 33 32 43 7 33 45 52 32 24 54 -0.29 33 0 0 32 40 12 22 53 38.3 60 147 -71 33 2 30 32 17 58 33 20 51 31 59 42 -0.29 34 0 0 32 14 42 22 53 30.1 61 149 -70 32 37 3 31 52 25 32 55 27 31 34 8 -0.29 35 0 0 31 48 50 22 53 21.8 62 150 -70 32 11 13 31 26 30 32 29 39 31 8 10 -0.29 36 0 0 31 22 34 22 53 13.3 63 152 -70 31 45 0 31 0 11 32 3 29 30 41 49 -0.29 37 0 0 30 55 56 22 53 4.8 64 153 -70 31 18 25 30 33 31 31 36 55 30 15 7 -0.29 38 0 0 30 28 56 22 52 56.1 64 155 -69 30 51 27 30 6 28 31 10 0 29 48 2 -0.29 39 0 0 30 1 35 22 52 47.4 65 156 -69 30 24 8 29 39 4 30 42 43 29 20 36 -0.29 40 0 0 29 33 51 22 52 38.5 66 158 -68 29 56 27 29 11 19 30 15 4 28 52 48 -0.29 41 0 0 29 5 47 22 52 29.5 67 160 -68 29 28 25 28 43 12 29 47 4 28 24 40 -0.29 42 0 0 28 37 23 22 52 20.4 67 162 -67 29 0 3 28 14 46 29 18 44 27 56 12 -0.29 43 0 0 28 8 38 22 52 11.2 68 164 -67 28 31 21 27 45 59 28 50 3 27 27 23 -0.29 44 0 0 27 39 34 22 52 1.9 69 166 -66 28 2 19 27 16 53 28 21 3 26 58 16 -0.29 45 0 0 27 10 11 22 51 52.5 69 169 -65 27 32 58 26 47 28 27 51 43 26 28 49 -0.29 46 0 0 26 40 30 22 51 43.0 70 171 -65 27 3 18 26 17 45 27 22 5 25 59 5 -0.29 47 0 0 26 10 31 22 51 33.4 71 174 -64 26 33 21 25 47 44 26 52 9 25 29 2 -0.29 48 0 0 25 40 14 22 51 23.8 71 177 -63 26 3 6 25 17 26 26 21 55 24 58 43 -0.29 49 0 0 25 9 41 22 51 14.0 72 180 -62 25 32 34 24 46 51 25 51 25 24 28 7 -0.29 50 0 0 24 38 51 22 51 4.2 72 183 -62 25 1 46 24 16 0 25 20 38 23 57 15 -0.29 51 0 0 24 7 47 22 50 54.3 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38 25 3 41 10 2 20 12 -0.28 91 0 0 2 30 39 22 44 17.0 50 278 -21 2 52 50 2 8 30 3 11 7 1 50 20 -0.28 92 0 0 2 1 0 22 44 8.6 49 278 -20 2 23 8 1 38 54 2 41 22 1 20 46 -0.28 93 0 0 1 31 40 22 44 0.4 48 278 -19 1 53 45 1 9 37 2 11 57 0 51 31 -0.28 94 0 0 1 2 40 22 43 52.3 47 279 -18 1 24 42 0 40 40 1 42 51 0 22 36 -0.28 95 0 0 0 34 0 22 43 44.3 46 279 -17 0 56 0 0 12 3 1 14 6 - 0 5 58 -0.28 96 0 0 0 5 41 22 43 36.5 45 279 -16 0 27 38 - 0 16 12 0 45 42 - 0 34 11 -0.28 97 0 0 - 0 22 15 22 43 28.9 44 280 -15 - 0 0 22 - 0 44 6 0 17 40 - 1 2 2 -0.28 98 0 0 - 0 49 50 22 43 21.4 43 280 -14 - 0 28 0 - 1 11 38 - 0 10 1 - 1 29 31 -0.28 99 0 0 - 1 17 2 22 43 14.0 42 280 -13 - 0 55 15 - 1 38 47 - 0 37 19 - 1 56 38 -0.28 100 0 0 - 1 43 51 22 43 6.9 41 280 -11 - 1 22 7 - 2 5 33 - 1 4 13 - 2 23 21 -0.28 101 0 0 - 2 10 16 22 42 59.9 39 281 -10 - 1 48 35 - 2 31 55 - 1 30 44 - 2 49 40 -0.28 102 0 0 - 2 36 17 22 42 53.0 38 281 -9 - 2 14 40 - 2 57 52 - 1 56 51 - 3 15 35 -0.28 103 0 0 - 3 1 53 22 42 46.4 37 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-13 30 14 -12 33 34 -13 46 41 -0.44 140 0 0 -13 17 43 22 40 44.5 0 277 29 -12 57 40 -13 37 45 -12 41 9 -13 54 11 -1.40 Uncertainty in time = +/- 3 secs Prediction of 2021 Nov 30.0 Data for the target star ------------------------ * name: UCAC4 485-051820 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 47 13.5374 DE: +06 54 40.232 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 47 13.5374 DE: +06 54 40.232 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (201) Penelope asteroid class: approx. diameter [km]: 71 approx. diameter ["]: 0.043 distance from Earth [AU]: 2.26330 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#108 date of fit: 2021 Nov 10 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): 0.024", 0.017", 106.565° remarks: * orbital elements for (201)Penelope : Mean anomaly = 171.24584781 deg Arg. of pericenter = 180.90697094 deg Long. of node = 156.91564005 deg Inclination = 5.75625145 deg Eccentricity = 0.17923664 Semimajor axis = 2.67959867 AU Perihelion dist = 2.19931639 AU Mag: H = 8.37, G = 0.24 Epoch of elements : MJD 59609.95125000 TDT (2022 Jan 30.9512) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1082021Nov10,6.25,2022,1,30,22.8301,0.130482,0.238609,-5.576260,3.104598,-0.002774,0.001210,0.000001,-0.000001 49.4956,6.7942,-159.12,-17.46,False UCAC4 485-051820,10.78709373,6.9111755,0.00,12.37,0.00,0.0,0,,10.80636070,6.7941930,1.28,0.00,0,0,0 201,Penelope,13.25,70.7,2.2633,0,0,-1.454,12.06,,4.2 0,171.0321,2022,1,30,180.9070,156.9156,5.7563,0.17924,2.67960,2.19932,8.38,5.0,0.15 1.411,0.0240,0.0173,107,0.0177,Known errors,-1.00,-1,-1,-1 20220130_051820,59548.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2021 Nov 30, 03:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org