IOTA/IOTA-ES occultation update for (3514) Hooke / UCAC4 318-138980 event on 2024 Oct 25, 17:41 UT Visible from Summary ------- On 2024 Oct 25 UT, the 21.9814136804648 km diameter asteroid (3514) Hooke will occult a 10.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.48 mag to 18.58 mag (the magnitude of the asteroid) for at most 0.750 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: 99 * date and approx. time of event: 2024 Oct 25, 17:38 - 2024 Oct 25, 17:45 * geocentric midpoint of event [JD]: 2460609.23723250 * magnitude of target star: 10.10 * magnitude drop [mag]: 8.48 * estimated maximum duration [s]: 0.750 * Moon: 36 % sunlit, 133° distance * Sun: 59° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 90°) * approx speed of asteroid's shadow [km/s]: 30.4917 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 318-138980 by 3514 Hooke on 2024 Oct 25 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 -115 0 0 4 15 23 17 38 9.6 0 117 59 4 8 24 4 22 23 4 4 48 4 26 0 .... -114 0 0 3 45 15 17 38 9.6 1 117 60 3 38 15 3 52 14 3 34 39 3 55 51 0.06 -113 0 0 3 15 11 17 38 9.8 2 117 61 3 8 12 3 22 10 3 4 36 3 25 46 -0.03 -112 0 0 2 45 13 17 38 10.0 3 117 62 2 38 14 2 52 12 2 34 38 2 55 48 -0.06 -111 0 0 2 15 21 17 38 10.3 5 117 63 2 8 22 2 22 19 2 4 47 2 25 55 -0.08 -110 0 0 1 45 36 17 38 10.6 6 117 64 1 38 38 1 52 35 1 35 3 1 56 10 -0.09 -109 0 0 1 16 0 17 38 11.1 7 117 66 1 9 2 1 22 58 1 5 27 1 26 33 -0.09 -108 0 0 0 46 32 17 38 11.6 8 117 67 0 39 35 0 53 30 0 36 0 0 57 5 -0.10 -107 0 0 0 17 15 17 38 12.2 9 117 68 0 10 18 0 24 12 0 6 43 0 27 46 -0.10 -106 0 0 - 0 11 53 17 38 12.9 10 117 69 - 0 18 49 - 0 4 56 - 0 22 24 - 0 1 22 -0.10 -105 0 0 - 0 40 49 17 38 13.7 11 117 70 - 0 47 45 - 0 33 53 - 0 51 19 - 0 30 19 -0.11 -104 0 0 - 1 9 33 17 38 14.5 12 117 71 - 1 16 29 - 1 2 38 - 1 20 2 - 0 59 4 -0.11 -103 0 0 - 1 38 5 17 38 15.4 13 117 72 - 1 45 0 - 1 31 10 - 1 48 33 - 1 27 36 -0.11 -102 0 0 - 2 6 23 17 38 16.4 15 117 73 - 2 13 17 - 1 59 29 - 2 16 51 - 1 55 55 -0.11 -101 0 0 - 2 34 27 17 38 17.5 16 117 74 - 2 41 21 - 2 27 34 - 2 44 54 - 2 24 0 -0.11 -100 0 0 - 3 2 17 17 38 18.6 17 117 75 - 3 9 9 - 2 55 23 - 3 12 42 - 2 51 51 -0.11 - 99 0 0 - 3 29 50 17 38 19.8 18 117 76 - 3 36 43 - 3 22 58 - 3 40 15 - 3 19 26 -0.11 - 98 0 0 - 3 57 8 17 38 21.1 19 117 77 - 4 4 0 - 3 50 17 - 4 7 32 - 3 46 44 -0.11 - 97 0 0 - 4 24 9 17 38 22.5 20 117 78 - 4 31 0 - 4 17 18 - 4 34 32 - 4 13 47 -0.12 - 96 0 0 - 4 50 53 17 38 23.9 21 117 79 - 4 57 43 - 4 44 3 - 5 1 15 - 4 40 31 -0.12 - 95 0 0 - 5 17 19 17 38 25.4 22 117 80 - 5 24 9 - 5 10 29 - 5 27 39 - 5 6 58 -0.12 - 94 0 0 - 5 43 26 17 38 26.9 23 116 81 - 5 50 15 - 5 36 38 - 5 53 46 - 5 33 7 -0.12 - 93 0 0 - 6 9 15 17 38 28.6 24 116 82 - 6 16 3 - 6 2 27 - 6 19 33 - 5 58 56 -0.12 - 92 0 0 - 6 34 44 17 38 30.3 26 116 83 - 6 41 31 - 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9 56 0 -10 12 47 - 9 52 33 -0.13 16 0 0 - 9 40 19 17 44 3.6 45 242 -13 - 9 47 0 - 9 33 37 - 9 50 27 - 9 30 11 -0.13 17 0 0 - 9 17 34 17 44 6.3 43 242 -14 - 9 24 16 - 9 10 52 - 9 27 43 - 9 7 25 -0.13 18 0 0 - 8 54 26 17 44 9.0 42 242 -15 - 9 1 9 - 8 47 43 - 9 4 37 - 8 44 16 -0.13 19 0 0 - 8 30 56 17 44 11.6 41 242 -16 - 8 37 39 - 8 24 12 - 8 41 7 - 8 20 44 -0.13 20 0 0 - 8 7 3 17 44 14.2 40 242 -18 - 8 13 47 - 8 0 18 - 8 17 15 - 7 56 49 -0.13 21 0 0 - 7 42 47 17 44 16.8 39 242 -19 - 7 49 33 - 7 36 2 - 7 53 2 - 7 32 33 -0.13 22 0 0 - 7 18 11 17 44 19.3 38 242 -20 - 7 24 57 - 7 11 25 - 7 28 26 - 7 7 55 -0.13 23 0 0 - 6 53 13 17 44 21.7 37 242 -21 - 7 0 0 - 6 46 26 - 7 3 30 - 6 42 57 -0.13 24 0 0 - 6 27 55 17 44 24.1 36 242 -22 - 6 34 43 - 6 21 7 - 6 38 13 - 6 17 37 -0.13 25 0 0 - 6 2 17 17 44 26.4 35 242 -23 - 6 9 5 - 5 55 28 - 6 12 36 - 5 51 58 -0.13 26 0 0 - 5 36 19 17 44 28.7 34 242 -24 - 5 43 8 - 5 29 30 - 5 46 39 - 5 25 59 -0.12 27 0 0 - 5 10 2 17 44 30.9 33 242 -25 - 5 16 52 - 5 3 12 - 5 20 23 - 4 59 41 -0.12 28 0 0 - 4 43 27 17 44 33.0 32 242 -26 - 4 50 17 - 4 36 36 - 4 53 49 - 4 33 4 -0.12 29 0 0 - 4 16 33 17 44 35.1 30 242 -27 - 4 23 25 - 4 9 42 - 4 26 56 - 4 6 10 -0.12 30 0 0 - 3 49 23 17 44 37.2 29 242 -28 - 3 56 15 - 3 42 31 - 3 59 47 - 3 38 58 -0.12 31 0 0 - 3 21 55 17 44 39.1 28 242 -29 - 3 28 48 - 3 15 3 - 3 32 21 - 3 11 30 -0.12 32 0 0 - 2 54 12 17 44 41.0 27 242 -31 - 3 1 5 - 2 47 19 - 3 4 38 - 2 43 46 -0.12 33 0 0 - 2 26 13 17 44 42.8 26 241 -32 - 2 33 7 - 2 19 19 - 2 36 41 - 2 15 46 -0.12 34 0 0 - 1 58 0 17 44 44.6 25 241 -33 - 2 4 55 - 1 51 5 - 2 8 28 - 1 47 32 -0.12 35 0 0 - 1 29 33 17 44 46.3 24 241 -34 - 1 36 28 - 1 22 37 - 1 40 2 - 1 19 3 -0.12 36 0 0 - 1 0 52 17 44 47.9 23 241 -35 - 1 7 48 - 0 53 56 - 1 11 22 - 0 50 22 -0.12 37 0 0 - 0 31 59 17 44 49.5 22 242 -36 - 0 38 55 - 0 25 2 - 0 42 29 - 0 21 28 -0.12 38 0 0 - 0 2 54 17 44 50.9 21 242 -37 - 0 9 50 0 4 3 - 0 13 25 0 7 38 -0.12 39 0 0 0 26 23 17 44 52.4 19 242 -38 0 19 25 0 33 20 0 15 51 0 36 55 -0.12 40 0 0 0 55 49 17 44 53.7 18 242 -39 0 48 51 1 2 47 0 45 16 1 6 22 -0.12 41 0 0 1 25 25 17 44 54.9 17 242 -40 1 18 27 1 32 23 1 14 52 1 35 59 -0.12 42 0 0 1 55 10 17 44 56.1 16 242 -42 1 48 11 2 2 8 1 44 36 2 5 44 -0.12 43 0 0 2 25 2 17 44 57.2 15 242 -43 2 18 3 2 32 1 2 14 28 2 35 37 -0.12 44 0 0 2 55 2 17 44 58.2 14 242 -44 2 48 3 3 2 1 2 44 27 3 5 37 -0.12 45 0 0 3 25 8 17 44 59.2 13 242 -45 3 18 8 3 32 8 3 14 32 3 35 44 -0.12 46 0 0 3 55 19 17 45 0.1 12 242 -46 3 48 19 4 2 19 3 44 43 4 5 56 -0.12 47 0 0 4 25 35 17 45 0.8 10 242 -47 4 18 35 4 32 35 4 14 59 4 36 12 -0.12 48 0 0 4 55 55 17 45 1.5 9 242 -48 4 48 55 5 2 55 4 45 18 5 6 32 -0.12 49 0 0 5 26 17 17 45 2.2 8 242 -49 5 19 17 5 33 18 5 15 40 5 36 55 -0.11 50 0 0 5 56 42 17 45 2.7 7 242 -50 5 49 41 6 3 43 5 46 5 6 7 20 -0.11 51 0 0 6 27 8 17 45 3.2 6 242 -51 6 20 7 6 34 9 6 16 30 6 37 45 -0.11 52 0 0 6 57 34 17 45 3.6 5 242 -52 6 50 33 7 4 35 6 46 56 7 8 12 -0.11 53 0 0 7 27 59 17 45 3.9 4 243 -53 7 20 59 7 35 0 7 17 22 7 38 37 -0.10 54 0 0 7 58 24 17 45 4.1 3 243 -55 7 51 23 8 5 25 7 47 46 8 9 2 -0.09 55 0 0 8 28 46 17 45 4.3 2 243 -56 8 21 45 8 35 47 8 18 8 8 39 24 -0.07 56 0 0 8 59 5 17 45 4.3 0 243 -57 8 52 4 9 6 6 8 48 27 9 9 42 0.07 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 318-138980 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 05 58.4595 DE: -26 32 22.394 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 05 58.4595 DE: -26 32 22.394 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 10.1 * B mag [mag]: 11.5 * Diameter [mas]: 0.30 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3514) Hooke asteroid class: approx. diameter [km]: 22 approx. diameter ["]: 0.007 distance from Earth [AU]: 4.11610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 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): 0.014", 0.002", 90.277° remarks: * orbital elements for (3514)Hooke : Mean anomaly = 299.6402669478 deg Arg. of pericenter = 342.1086827813 deg Long. of node = 24.2491580664 deg Inclination = 3.5043197030 deg Eccentricity = 0.1931850767 Semimajor axis = 3.9531815426 AU Perihelion dist = 3.1894858633 AU Mag: H = 11.89, G = 0.15 Epoch of elements : MJD 60608.73723221 TDT (2024 Oct 25.7372) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr24,0.75,2024,10,25,17.693580,-0.006625,0.130402,17.191100,0.813662,0.005142,-0.000102,-0.000001,0.000000 -28.1289,-26.5384,-89.41,-12.44,False UCAC4 318-138980,18.09957213,-26.5395539,11.47,10.10,9.36,0.3,0,,18.12509301,-26.5383841,8.48,8.77,0,0,0 3514,Hooke,18.58,22.877,4.1161,0,0,2.737,1.74,,2.2,0 0,299.5478,2024,10,25,342.1087,24.2492,3.5043,0.19319,3.95318,3.18949,11.89,5.0,0.15 1.258,0.0143,0.0018,90,0.0020,Known errors,0.68,0,-1,-1 20241025_138980,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org