IOTA/IOTA-ES occultation update for (128) Nemesis / TYC 1944-01006-1 event on 2024 Jan 07, 07:28 UT Visible from Summary ------- On 2024 Jan 07 UT, the 175.036 km diameter asteroid (128) Nemesis will occult a 11.3 mag star in the constellation Cancer for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 0.97 mag to 11.73 mag (the magnitude of the asteroid) for at most 14.950 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: 2024 Jan 07, 07:21 - 2024 Jan 07, 07:36 * geocentric midpoint of event [JD]: 2460316.81167208 * magnitude of target star: 11.33 * magnitude drop [mag]: 0.97 * estimated maximum duration [s]: 14.950 * Moon: 20 % sunlit, 109° distance * Sun: 161° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 216 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.002", 102°) * approx speed of asteroid's shadow [km/s]: 11.7110 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1944-01006-1 by 128 Nemesis on 2024 Jan 7 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 139 0 0 .. .. .... .. .. .. .. .. .. 53 2 36 .. .. .. 53 7 34 .. .. .. .... 140 0 0 .. .. .... .. .. .. .. .. .. 53 38 41 .. .. .. 53 43 38 .. .. .. .... 141 0 0 52 52 26 7 36 8.2 1 47 -8 54 14 2 .. .. .. 54 18 58 .. .. .. .... 142 0 0 53 27 19 7 36 7.9 2 47 -9 54 48 38 52 7 54 54 53 33 52 3 13 -0.66 143 0 0 54 1 29 7 36 7.6 3 48 -10 55 22 29 52 42 21 55 27 23 52 37 40 -0.68 144 0 0 54 34 54 7 36 7.1 3 49 -11 55 55 35 53 16 4 56 0 28 53 11 25 -0.69 145 0 0 55 7 36 7 36 6.4 4 50 -11 56 27 56 53 49 4 56 32 48 53 44 26 -0.69 146 0 0 55 39 33 7 36 5.7 5 51 -12 56 59 33 54 21 21 57 4 24 54 16 44 -0.70 147 0 0 56 10 47 7 36 4.9 6 51 -13 57 30 25 54 52 56 57 35 15 54 48 20 -0.70 148 0 0 56 41 17 7 36 3.9 6 52 -14 58 0 33 55 23 47 58 5 21 55 19 12 -0.70 149 0 0 57 11 4 7 36 2.9 7 53 -14 58 29 57 55 53 55 58 34 43 55 49 22 -0.70 150 0 0 57 40 8 7 36 1.7 8 54 -15 58 58 37 56 23 22 59 3 22 56 18 49 -0.70 151 0 0 58 8 29 7 36 0.5 9 55 -16 59 26 34 56 52 6 59 31 17 56 47 35 -0.70 152 0 0 58 36 8 7 35 59.3 9 56 -16 59 53 48 57 20 8 59 58 30 57 15 38 -0.71 153 0 0 59 3 5 7 35 57.9 10 57 -17 60 20 20 57 47 29 60 25 0 57 43 1 -0.71 154 0 0 59 29 21 7 35 56.5 11 57 -17 60 46 10 58 14 9 60 50 48 58 9 42 -0.71 155 0 0 59 54 56 7 35 55.0 11 58 -18 61 11 19 58 40 8 61 15 56 58 35 43 -0.71 156 0 0 60 19 50 7 35 53.4 12 59 -19 61 35 47 59 5 28 61 40 23 59 1 4 -0.71 157 0 0 60 44 5 7 35 51.9 13 60 -19 61 59 36 59 30 8 62 4 10 59 25 45 -0.71 158 0 0 61 7 42 7 35 50.2 13 61 -20 62 22 45 59 54 9 62 27 17 59 49 48 -0.71 159 0 0 61 30 39 7 35 48.5 14 62 -20 62 45 16 60 17 32 62 49 46 60 13 12 -0.71 160 0 0 61 52 59 7 35 46.8 14 63 -21 63 7 9 60 40 17 63 11 38 60 35 59 -0.71 160 59 59 62 14 42 7 35 45.0 15 64 -21 63 28 25 61 2 25 63 32 52 60 58 9 -0.71 161 59 59 62 35 48 7 35 43.2 15 65 -22 63 49 4 61 23 57 63 53 30 61 19 42 -0.71 162 59 59 62 56 19 7 35 41.4 16 65 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175 59 59 66 33 58 7 35 15.8 22 78 -28 67 41 19 65 27 44 67 45 23 65 23 48 -0.72 176 59 59 66 47 20 7 35 13.7 23 79 -28 67 54 18 65 41 27 67 58 20 65 37 33 -0.72 177 59 59 67 0 15 7 35 11.7 23 80 -28 68 6 51 65 54 44 68 10 52 65 50 51 -0.72 178 59 59 67 12 45 7 35 9.6 24 81 -29 68 18 59 66 7 35 68 22 58 66 3 43 -0.72 -180 0 1 67 24 51 7 35 7.5 24 82 -29 68 30 43 66 20 1 68 34 41 66 16 10 -0.72 -179 0 1 67 36 32 7 35 5.5 24 83 -29 68 42 3 66 32 2 68 46 0 66 28 12 -0.72 -178 0 1 67 47 49 7 35 3.4 25 84 -30 68 53 0 66 43 39 68 56 55 66 39 50 -0.72 -177 0 1 67 58 43 7 35 1.3 25 85 -30 69 3 34 66 54 52 69 7 28 66 51 5 -0.72 -176 0 1 68 9 15 7 34 59.2 26 86 -30 69 13 45 67 5 42 69 17 39 67 1 56 -0.72 -175 0 1 68 19 24 7 34 57.1 26 87 -31 69 23 35 67 16 9 69 27 27 67 12 24 -0.72 -174 0 1 68 29 11 7 34 55.1 26 87 -31 69 33 4 67 26 14 69 36 55 67 22 30 -0.72 -173 0 1 68 38 37 7 34 53.0 27 88 -31 69 42 12 67 35 57 69 46 2 67 32 14 -0.72 -172 0 1 68 47 42 7 34 50.9 27 89 -32 69 50 59 67 45 19 69 54 48 67 41 37 -0.72 -171 0 1 68 56 26 7 34 48.8 27 90 -32 69 59 27 67 54 20 70 3 15 67 50 39 -0.72 -170 0 1 69 4 51 7 34 46.7 28 91 -32 70 7 35 68 3 0 70 11 22 67 59 20 -0.72 -169 0 1 69 12 55 7 34 44.6 28 92 -32 70 15 24 68 11 20 70 19 9 68 7 41 -0.72 -168 0 1 69 20 41 7 34 42.5 29 93 -33 70 22 53 68 19 20 70 26 38 68 15 42 -0.72 -167 0 1 69 28 7 7 34 40.4 29 94 -33 70 30 5 68 27 1 70 33 49 68 23 23 -0.72 -166 0 1 69 35 15 7 34 38.3 29 95 -33 70 36 58 68 34 22 70 40 41 68 30 45 -0.72 -165 0 1 69 42 4 7 34 36.2 30 97 -33 70 43 34 68 41 24 70 47 16 68 37 48 -0.72 -164 0 1 69 48 35 7 34 34.1 30 98 -34 70 49 52 68 48 9 70 53 33 68 44 33 -0.72 -163 0 1 69 54 49 7 34 31.9 30 99 -34 70 55 53 68 54 34 70 59 33 68 51 0 -0.72 -162 0 1 70 0 45 7 34 29.8 30 100 -34 71 1 37 69 0 42 71 5 16 68 57 8 -0.72 -161 0 1 70 6 24 7 34 27.7 31 101 -34 71 7 4 69 6 32 71 10 43 69 2 59 -0.72 -160 0 1 70 11 46 7 34 25.6 31 102 -35 71 12 15 69 12 5 71 15 53 69 8 33 -0.72 -159 0 1 70 16 52 7 34 23.5 31 103 -35 71 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70 7 0 68 1 57 70 10 47 67 58 16 -0.73 -107 0 1 68 55 38 7 32 14.4 45 160 -43 69 58 53 67 53 17 70 2 41 67 49 35 -0.73 -106 0 1 68 46 54 7 32 11.2 46 161 -43 69 50 26 67 44 17 69 54 16 67 40 34 -0.73 -105 0 1 68 37 50 7 32 7.9 46 162 -44 69 41 40 67 34 56 69 45 30 67 31 12 -0.73 -104 0 1 68 28 25 7 32 4.6 46 163 -44 69 32 33 67 25 14 69 36 25 67 21 29 -0.73 -103 0 1 68 18 40 7 32 1.2 46 165 -44 69 23 6 67 15 10 69 26 59 67 11 24 -0.73 -102 0 1 68 8 32 7 31 57.7 47 166 -44 69 13 18 67 4 45 69 17 13 67 0 58 -0.73 -101 0 1 67 58 3 7 31 54.2 47 167 -44 69 3 9 66 53 57 69 7 4 66 50 9 -0.73 -100 0 1 67 47 12 7 31 50.6 47 168 -44 68 52 38 66 42 46 68 56 34 66 38 57 -0.73 - 99 0 1 67 35 58 7 31 47.0 47 170 -44 68 41 44 66 31 12 68 45 42 66 27 22 -0.73 - 98 0 1 67 24 21 7 31 43.3 48 171 -44 68 30 28 66 19 15 68 34 27 66 15 23 -0.73 - 97 0 1 67 12 19 7 31 39.5 48 172 -44 68 18 48 66 6 53 68 22 49 66 3 1 -0.73 - 96 0 1 66 59 54 7 31 35.7 48 174 -44 68 6 45 65 54 7 68 10 47 65 50 13 -0.73 - 95 0 0 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42 24 42 17 -0.72 - 19 0 0 25 16 58 7 22 45.7 27 287 -9 26 31 33 24 3 49 26 36 4 23 59 29 -0.72 - 18 0 0 24 34 6 7 22 39.7 26 287 -8 25 48 17 23 21 20 25 52 46 23 17 2 -0.72 - 17 0 0 23 51 36 7 22 33.8 25 288 -7 25 5 22 22 39 13 25 9 49 22 34 56 -0.72 - 16 0 0 23 9 28 7 22 28.2 24 289 -6 24 22 50 21 57 29 24 27 16 21 53 13 -0.72 - 15 0 0 22 27 45 7 22 22.9 23 289 -5 23 40 42 21 16 9 23 45 6 21 11 55 -0.72 - 14 0 0 21 46 28 7 22 17.7 22 290 -4 22 59 0 20 35 16 23 3 23 20 31 3 -0.73 - 13 0 0 21 5 39 7 22 12.8 21 290 -3 22 17 46 19 54 49 22 22 7 19 50 38 -0.73 - 12 0 0 20 25 17 7 22 8.1 20 291 -1 21 37 0 19 14 51 21 41 19 19 10 41 -0.73 - 11 0 0 19 45 26 7 22 3.7 19 291 0 20 56 44 18 35 23 21 1 2 18 31 14 -0.73 - 10 0 0 19 6 5 7 21 59.5 18 291 1 20 16 59 17 56 25 20 21 15 17 52 18 -0.73 - 9 0 0 18 27 16 7 21 55.6 17 292 2 19 37 46 17 18 0 19 42 1 17 13 53 -0.73 - 8 0 0 17 49 1 7 21 51.9 15 292 3 18 59 6 16 40 7 19 3 20 16 36 2 -0.74 - 7 0 0 17 11 19 7 21 48.5 14 293 4 18 21 0 16 2 48 18 25 13 15 58 44 -0.74 - 6 0 0 16 34 13 7 21 45.3 13 293 5 17 43 30 15 26 4 17 47 41 15 22 2 -0.74 - 5 0 0 15 57 42 7 21 42.4 12 293 6 17 6 36 14 49 55 17 10 46 14 45 54 -0.75 - 4 0 0 15 21 48 7 21 39.8 11 294 7 16 30 19 14 14 24 16 34 27 14 10 24 -0.75 - 3 0 0 14 46 32 7 21 37.4 10 294 9 15 54 40 13 39 29 15 58 47 13 35 31 -0.76 - 2 0 0 14 11 55 7 21 35.2 9 294 10 15 19 40 13 5 13 15 23 45 13 1 16 -0.77 - 1 0 0 13 37 56 7 21 33.3 8 294 11 14 45 20 12 31 36 14 49 23 12 27 40 -0.78 - 0 0 0 13 4 37 7 21 31.7 7 295 12 14 11 39 11 58 38 14 15 42 11 54 43 -0.79 1 0 0 12 31 59 7 21 30.3 5 295 13 13 38 39 11 26 20 13 42 40 11 22 27 -0.80 2 0 0 12 0 2 7 21 29.2 4 295 14 13 6 21 10 54 43 13 10 21 10 50 51 -0.83 3 0 0 11 28 46 7 21 28.3 3 295 15 12 34 45 10 23 47 12 38 43 10 19 56 -0.87 4 0 0 10 58 13 7 21 27.7 2 295 16 12 3 51 9 53 33 12 7 48 9 49 43 -0.96 5 0 0 10 28 21 7 21 27.3 1 296 17 11 33 40 9 24 1 11 37 36 9 20 12 -1.22 6 0 0 .. .. .... .. .. .. .. .. .. 11 4 12 .. .. .. 11 8 7 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: TYC 1944-01006-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 30 24.1882 DE: +25 28 05.448 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 30 24.1883 DE: +25 28 05.448 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.3 * B mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (128) Nemesis asteroid class: approx. diameter [km]: 175 approx. diameter ["]: 0.134 distance from Earth [AU]: 1.80710 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#126 date of fit: 2023 Apr 27 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): 0.015", 0.002", 102.369° remarks: * orbital elements for (128)Nemesis : Mean anomaly = 84.0622243666 deg Arg. of pericenter = 302.7999741049 deg Long. of node = 76.1593150273 deg Inclination = 6.2471289259 deg Eccentricity = 0.1276271465 Semimajor axis = 2.7486207585 AU Perihelion dist = 2.3978221343 AU Mag: H = 7.75, G = 0.15 Epoch of elements : MJD 60316.31167245 TDT (2024 Jan 07.3117) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262023Apr27,14.95,2024,1,7,7.480130,0.246522,0.531721,-5.996225,2.781585,-0.001919,-0.000156,0.000001,0.000000 -90.6106,25.3869,69.29,-22.42,False TYC 1944-01006-1,8.50671894,25.4681800,11.63,11.33,11.17,0.0,0,,8.53090754,25.3868640,0.97,0.81,0,0,0 128,Nemesis,11.73,175.036,1.8071,0,0,-2.153,13.53,,8.0,0 0,83.9948,2024,1,7,302.8000,76.1593,6.2471,0.12763,2.74862,2.39782,7.75,5.0,0.15 1.030,0.0150,0.0024,102,0.0040,Known errors,0.92,0,-1,-1 20240107_1006-1,60137.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org