IOTA/IOTA-ES occultation update for (4166) Pontryagin / TYC 5239-01410-1 event on 2024 Dec 10, 14:10 UT Visible from Summary ------- On 2024 Dec 10 UT, the 8.02571415808442 km diameter asteroid (4166) Pontryagin will occult a 9.2 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.94 mag to 18.14 mag (the magnitude of the asteroid) for at most 0.370 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: 98 * date and approx. time of event: 2024 Dec 10, 14:05 - 2024 Dec 10, 14:15 * geocentric midpoint of event [JD]: 2460655.09061671 * magnitude of target star: 9.20 * magnitude drop [mag]: 8.94 * estimated maximum duration [s]: 0.370 * Moon: 72 % sunlit, 36° distance * Sun: 80° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 8 * 1 sigma uncertainty interval [path widths]: +/- 0.36 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 66°) * approx speed of asteroid's shadow [km/s]: 22.4093 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5239-01410-1 by 4166 Pontryagin on 2024 Dec 10 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 - 42 0 0 -10 26 26 14 5 49.7 1 96 75 -10 28 43 -10 24 10 -10 30 20 -10 22 33 .... - 41 0 0 -10 32 20 14 5 49.8 2 96 75 -10 34 36 -10 30 3 -10 36 13 -10 28 26 -0.10 - 40 0 0 -10 37 49 14 5 50.0 3 96 76 -10 40 6 -10 35 33 -10 41 43 -10 33 56 -0.14 - 39 0 0 -10 42 56 14 5 50.3 3 95 76 -10 45 12 -10 40 40 -10 46 49 -10 39 3 -0.15 - 38 0 0 -10 47 39 14 5 50.6 4 95 77 -10 49 56 -10 45 23 -10 51 32 -10 43 46 -0.16 - 37 0 0 -10 51 59 14 5 51.0 5 95 77 -10 54 15 -10 49 43 -10 55 52 -10 48 6 -0.17 - 36 0 0 -10 55 55 14 5 51.6 6 95 78 -10 58 12 -10 53 39 -10 59 48 -10 52 2 -0.17 - 35 0 0 -10 59 28 14 5 52.2 7 95 78 -11 1 44 -10 57 12 -11 3 21 -10 55 35 -0.17 - 34 0 0 -11 2 37 14 5 52.9 8 94 78 -11 4 53 -11 0 21 -11 6 30 -10 58 44 -0.18 - 33 0 0 -11 5 23 14 5 53.6 9 94 78 -11 7 39 -11 3 7 -11 9 16 -11 1 30 -0.18 - 32 0 0 -11 7 45 14 5 54.5 10 94 78 -11 10 1 -11 5 29 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79 162 9 4 20 14 4 25 7 4 18 30 4 26 51 -0.19 45 0 0 4 46 38 14 10 37.5 79 168 8 4 44 11 4 49 5 4 42 27 4 50 49 -0.19 46 0 0 5 10 44 14 10 42.9 79 173 7 5 8 17 5 13 11 5 6 33 5 14 55 -0.19 47 0 0 5 34 58 14 10 48.4 78 179 6 5 32 31 5 37 25 5 30 47 5 39 9 -0.19 48 0 0 5 59 19 14 10 53.8 78 183 5 5 56 52 6 1 46 5 55 8 6 3 30 -0.19 49 0 0 6 23 46 14 10 59.2 78 188 3 6 21 19 6 26 13 6 19 35 6 27 58 -0.19 50 0 0 6 48 20 14 11 4.6 77 192 2 6 45 53 6 50 47 6 44 8 6 52 31 -0.19 51 0 0 7 12 59 14 11 10.0 76 196 1 7 10 31 7 15 26 7 8 47 7 17 10 -0.19 52 0 0 7 37 42 14 11 15.3 76 200 0 7 35 15 7 40 9 7 33 30 7 41 54 -0.19 53 0 0 8 2 29 14 11 20.7 75 203 -1 8 0 2 8 4 56 7 58 17 8 6 41 -0.19 54 0 0 8 27 20 14 11 26.0 74 206 -2 8 24 52 8 29 47 8 23 8 8 31 32 -0.19 55 0 0 8 52 13 14 11 31.3 73 208 -3 8 49 45 8 54 40 8 48 1 8 56 25 -0.19 56 0 0 9 17 8 14 11 36.6 72 211 -4 9 14 41 9 19 35 9 12 56 9 21 20 -0.19 57 0 0 9 42 5 14 11 41.8 72 213 -5 9 39 37 9 44 32 9 37 52 9 46 17 -0.19 58 0 0 10 7 2 14 11 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15 27 34 14 12 50.6 58 230 -20 15 25 6 15 30 1 15 23 22 15 31 45 -0.19 72 0 0 15 51 33 14 12 55.1 57 231 -21 15 49 6 15 54 0 15 47 22 15 55 45 -0.19 73 0 0 16 15 24 14 12 59.6 56 232 -22 16 12 57 16 17 51 16 11 13 16 19 36 -0.19 74 0 0 16 39 6 14 13 4.0 55 232 -23 16 36 39 16 41 33 16 34 55 16 43 17 -0.19 75 0 0 17 2 38 14 13 8.3 54 233 -25 17 0 12 17 5 5 16 58 28 17 6 49 -0.19 76 0 0 17 26 0 14 13 12.5 53 234 -26 17 23 34 17 28 27 17 21 50 17 30 11 -0.19 77 0 0 17 49 12 14 13 16.7 52 234 -27 17 46 45 17 51 38 17 45 1 17 53 22 -0.19 78 0 0 18 12 12 14 13 20.8 51 235 -28 18 9 45 18 14 38 18 8 2 18 16 22 -0.19 79 0 0 18 35 0 14 13 24.8 50 236 -29 18 32 34 18 37 26 18 30 50 18 39 10 -0.19 80 0 0 18 57 36 14 13 28.8 49 236 -30 18 55 10 19 0 2 18 53 26 19 1 46 -0.19 81 0 0 19 20 0 14 13 32.7 48 237 -31 19 17 34 19 22 25 19 15 50 19 24 9 -0.19 82 0 0 19 42 10 14 13 36.5 47 237 -32 19 39 44 19 44 36 19 38 1 19 46 19 -0.19 83 0 0 20 4 7 14 13 40.2 46 238 -33 20 1 41 20 6 32 19 59 58 20 8 16 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24 22 6 24 30 16 -0.19 97 0 0 24 44 22 14 14 24.3 32 245 -47 24 41 59 24 46 45 24 40 18 24 48 27 -0.19 98 0 0 25 2 16 14 14 26.9 31 246 -47 24 59 53 25 4 38 24 58 11 25 6 20 -0.19 99 0 0 25 19 50 14 14 29.3 30 246 -48 25 17 28 25 22 13 25 15 47 25 23 54 -0.19 100 0 0 25 37 7 14 14 31.7 29 247 -49 25 34 44 25 39 29 25 33 3 25 41 10 -0.19 101 0 0 25 54 5 14 14 34.0 28 247 -50 25 51 42 25 56 27 25 50 2 25 58 8 -0.19 102 0 0 26 10 43 14 14 36.3 27 248 -51 26 8 21 26 13 5 26 6 41 26 14 46 -0.19 103 0 0 26 27 3 14 14 38.4 26 248 -52 26 24 41 26 29 25 26 23 1 26 31 5 -0.19 104 0 0 26 43 4 14 14 40.5 25 249 -53 26 40 42 26 45 25 26 39 2 26 47 6 -0.19 105 0 0 26 58 45 14 14 42.5 24 249 -54 26 56 24 27 1 6 26 54 43 27 2 47 -0.19 106 0 0 27 14 7 14 14 44.4 24 250 -55 27 11 46 27 16 28 27 10 6 27 18 8 -0.19 107 0 0 27 29 9 14 14 46.3 23 250 -56 27 26 48 27 31 30 27 25 8 27 33 10 -0.19 108 0 0 27 43 52 14 14 48.0 22 251 -57 27 41 31 27 46 13 27 39 51 27 47 53 -0.19 109 0 0 27 58 15 14 14 49.7 21 251 -58 27 55 54 28 0 36 27 54 15 28 2 15 -0.19 110 0 0 28 12 18 14 14 51.3 20 252 -58 28 9 58 28 14 38 28 8 18 28 16 18 -0.19 111 0 0 28 26 1 14 14 52.9 19 252 -59 28 23 41 28 28 22 28 22 2 28 30 1 -0.19 112 0 0 28 39 25 14 14 54.3 18 253 -60 28 37 5 28 41 45 28 35 25 28 43 24 -0.19 113 0 0 28 52 28 14 14 55.7 17 253 -61 28 50 8 28 54 48 28 48 29 28 56 27 -0.19 114 0 0 29 5 11 14 14 57.0 16 253 -62 29 2 52 29 7 31 29 1 13 29 9 10 -0.19 115 0 0 29 17 34 14 14 58.3 15 254 -63 29 15 15 29 19 53 29 13 36 29 21 32 -0.19 116 0 0 29 29 37 14 14 59.4 14 255 -64 29 27 18 29 31 56 29 25 39 29 33 35 -0.19 117 0 0 29 41 19 14 15 0.5 14 255 -64 29 39 0 29 43 38 29 37 22 29 45 17 -0.19 118 0 0 29 52 42 14 15 1.5 13 256 -65 29 50 23 29 55 1 29 48 44 29 56 39 -0.19 119 0 0 30 3 44 14 15 2.5 12 256 -66 30 1 25 30 6 2 29 59 47 30 7 41 -0.19 120 0 0 30 14 26 14 15 3.4 11 257 -67 30 12 7 30 16 44 30 10 29 30 18 22 -0.19 121 0 0 30 24 47 14 15 4.2 10 257 -68 30 22 29 30 27 5 30 20 50 30 28 43 -0.19 122 0 0 30 34 48 14 15 4.9 9 258 -69 30 32 30 30 37 6 30 30 52 30 38 44 -0.19 123 0 0 30 44 29 14 15 5.6 8 258 -69 30 42 11 30 46 47 30 40 33 30 48 25 -0.19 124 0 0 30 53 49 14 15 6.2 7 259 -70 30 51 31 30 56 7 30 49 53 30 57 45 -0.19 125 0 0 31 2 49 14 15 6.7 6 259 -71 31 0 31 31 5 7 30 58 53 31 6 44 -0.19 126 0 0 31 11 28 14 15 7.2 6 260 -72 31 9 11 31 13 46 31 7 33 31 15 24 -0.19 127 0 0 31 19 48 14 15 7.6 5 260 -72 31 17 30 31 22 5 31 15 53 31 23 43 -0.19 128 0 0 31 27 46 14 15 7.9 4 261 -73 31 25 29 31 30 4 31 23 52 31 31 41 -0.20 129 0 0 31 35 25 14 15 8.2 3 261 -74 31 33 8 31 37 42 31 31 30 31 39 20 -0.20 130 0 0 31 42 43 14 15 8.3 2 262 -74 31 40 26 31 45 0 31 38 49 31 46 37 -0.20 131 0 0 31 49 41 14 15 8.5 1 262 -75 31 47 24 31 51 58 31 45 47 31 53 35 -0.21 132 0 0 31 56 18 14 15 8.5 0 263 -76 31 54 2 31 58 35 31 52 25 32 0 12 -0.27 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5239-01410-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 37 54.1369 DE: -06 04 25.795 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 37 54.1368 DE: -06 04 25.795 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.2 * B mag [mag]: 9.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4166) Pontryagin asteroid class: approx. diameter [km]: 8 approx. diameter ["]: 0.004 distance from Earth [AU]: 2.56850 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 date of fit: 2023 Apr 24 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): 0.012", 0.001", 65.647° remarks: * orbital elements for (4166)Pontryagin : Mean anomaly = 285.7389978951 deg Arg. of pericenter = 127.2678697156 deg Long. of node = 311.2512777249 deg Inclination = 3.1074414896 deg Eccentricity = 0.0306877892 Semimajor axis = 2.6071646150 AU Perihelion dist = 2.5271564968 AU Mag: H = 12.97, G = 0.15 Epoch of elements : MJD 60654.59061659 TDT (2024 Dec 10.5906) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr24,0.37,2024,12,10,14.174801,-0.067732,0.174961,11.793388,4.571603,0.005329,0.002192,0.000000,0.000000 47.3799,-5.9448,-34.36,-22.98,False TYC 5239-01410-1,22.63170472,-6.0738317,9.76,9.20,8.90,0.1,0,,22.65326827,-5.9448117,8.94,8.79,0,0,0 4166,Pontryagin,18.14,8.212,2.5685,0,0,2.707,15.66,,0.8,0 0,285.6007,2024,12,10,127.2679,311.2513,3.1074,0.03069,2.60716,2.52716,12.96,5.0,0.15 1.355,0.0117,0.0014,66,0.0016,Known errors,1.19,0,-1,-1 20241210_1410-1,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:38 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org