IOTA/IOTA-ES occultation update for (4597) Consolmagno / TYC 1898-01439-1 event on 2009 Dec 06, 01:09 UT Visible from Summary ------- On 2009 Dec 06 UT, the 18 km diameter asteroid (4597) Consolmagno will occult a 10.2 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.2 mag to 16.4 mag (the magnitude of the asteroid) for at most 1.8 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 16 * date and approx. time of event: 2009 Dec 06, 01:02 - 2009 Dec 06, 01:17 UT * magnitude of target star: 10.2 * magnitude drop [mag]: 6.2 * estimated maximum duration [s]: 1.8 * Moon: 81 % sunlit, 23° distance * Sun: 151° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 4.21 * 1 sigma uncertainty interval [seconds]: +/- 8.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .066 +/- .054) * 1 sigma uncertainty ellipse (major, minor, PA): ( .066", .054", 92° ) * approx speed of asteroid's shadow [km/s]: 9.8940 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1898-01439-1 by 4597 Consolmagno on 2009 Dec 6 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude -110 0 0 46 52 20 1 17 48 0 51 -17 47 0 5 46 44 37 48 5 53 .. .. .. -109 0 0 47 25 25 1 17 48 1 52 -18 47 33 8 47 17 42 48 38 52 .. .. .. -108 0 0 47 58 2 1 17 47 2 53 -19 48 5 45 47 50 20 49 11 22 .. .. .. -107 0 0 48 30 10 1 17 47 3 53 -20 48 37 52 48 22 29 49 43 24 .. .. .. -106 0 0 49 1 49 1 17 46 4 54 -20 49 9 31 48 54 9 50 14 55 .. .. .. -105 0 0 49 32 59 1 17 45 4 55 -21 49 40 39 49 25 20 50 45 56 .. .. .. -104 0 0 50 3 39 1 17 44 5 56 -22 50 11 18 49 56 1 51 16 27 .. .. .. -103 0 0 50 33 49 1 17 43 6 56 -23 50 41 27 50 26 11 51 46 26 49 22 37 -102 0 0 51 3 28 1 17 42 7 57 -23 51 11 5 50 55 51 52 15 55 49 52 26 -101 0 0 51 32 36 1 17 41 8 58 -24 51 40 12 51 25 1 52 44 52 50 21 45 -100 0 0 52 1 13 1 17 39 8 59 -25 52 8 48 51 53 39 53 13 17 50 50 33 - 99 0 0 52 29 19 1 17 37 9 60 -25 52 36 52 52 21 46 53 41 11 51 18 50 - 98 0 0 52 56 53 1 17 36 10 60 -26 53 4 25 52 49 22 54 8 32 51 46 37 - 97 0 0 53 23 56 1 17 34 11 61 -26 53 31 27 53 16 26 54 35 22 52 13 52 - 96 0 0 53 50 27 1 17 32 11 62 -27 53 57 57 53 42 59 55 1 39 52 40 37 - 95 0 0 54 16 27 1 17 30 12 63 -28 54 23 55 54 9 0 55 27 24 53 6 50 - 94 0 0 54 41 55 1 17 27 13 64 -28 54 49 22 54 34 30 55 52 38 53 32 32 - 93 0 0 55 6 52 1 17 25 13 65 -29 55 14 17 54 59 28 56 17 20 53 57 43 - 92 0 0 55 31 18 1 17 23 14 65 -29 55 38 41 55 23 55 56 41 30 54 22 24 - 91 0 0 55 55 12 1 17 20 15 66 -30 56 2 34 55 47 51 57 5 8 54 46 33 - 90 0 0 56 18 35 1 17 18 15 67 -30 56 25 55 56 11 16 57 28 16 55 10 11 - 89 0 0 56 41 27 1 17 15 16 68 -31 56 48 46 56 34 10 57 50 52 55 33 19 - 88 0 0 57 3 49 1 17 13 17 69 -31 57 11 6 56 56 33 58 12 57 55 55 56 - 87 0 0 57 25 41 1 17 10 17 70 -32 57 32 55 57 18 26 58 34 32 56 18 3 - 86 0 0 57 47 2 1 17 7 18 71 -32 57 54 15 57 39 49 58 55 36 56 39 41 - 85 0 0 58 7 53 1 17 4 19 71 -33 58 15 5 58 0 42 59 16 11 57 0 48 - 84 0 0 58 28 15 1 17 1 19 72 -33 58 35 25 58 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61 40 15 59 28 50 31 0 0 60 17 4 1 9 23 53 209 -38 60 24 4 60 10 4 61 23 36 59 11 38 32 0 0 59 59 42 1 9 16 53 210 -38 60 6 44 59 52 40 61 6 31 58 54 1 33 0 0 59 41 54 1 9 10 53 212 -38 59 48 58 59 34 50 60 48 59 58 35 57 34 0 0 59 23 39 1 9 3 53 214 -37 59 30 45 59 16 34 60 31 1 58 17 27 35 0 0 59 4 57 1 8 57 53 215 -37 59 12 5 58 57 51 60 12 35 57 58 30 36 0 0 58 45 49 1 8 50 53 217 -37 58 52 58 58 38 40 59 53 43 57 39 6 37 0 0 58 26 12 1 8 43 53 218 -36 58 33 23 58 19 3 59 34 23 57 19 14 38 0 0 58 6 9 1 8 36 53 220 -36 58 13 21 57 58 57 59 14 35 56 58 55 39 0 0 57 45 37 1 8 29 53 222 -36 57 52 51 57 38 24 58 54 19 56 38 9 40 0 0 57 24 37 1 8 22 53 223 -35 57 31 53 57 17 22 58 33 35 56 16 54 41 0 0 57 3 9 1 8 15 52 225 -35 57 10 26 56 55 53 58 12 23 55 55 12 42 0 0 56 41 13 1 8 8 52 227 -34 56 48 31 56 33 55 57 50 41 55 33 1 43 0 0 56 18 48 1 8 1 52 228 -34 56 26 8 56 11 28 57 28 31 55 10 22 44 0 0 55 55 54 1 7 53 52 230 -33 56 3 15 55 48 33 57 5 52 54 47 14 45 0 0 55 32 31 1 7 46 52 232 -33 55 39 54 55 25 9 56 42 43 54 23 38 46 0 0 55 8 39 1 7 38 52 233 -32 55 16 4 55 1 15 56 19 5 53 59 33 47 0 0 54 44 19 1 7 31 52 235 -32 54 51 45 54 36 53 55 54 58 53 35 0 48 0 0 54 19 29 1 7 23 51 236 -31 54 26 56 54 12 2 55 30 22 53 9 58 49 0 0 53 54 10 1 7 15 51 238 -31 54 1 39 53 46 43 55 5 16 52 44 27 50 0 0 53 28 23 1 7 7 51 240 -30 53 35 53 53 20 54 54 39 40 52 18 29 51 0 0 53 2 6 1 6 59 50 241 -30 53 9 38 52 54 36 54 13 35 51 52 1 52 0 0 52 35 21 1 6 51 50 243 -29 52 42 54 52 27 50 53 47 1 51 25 6 53 0 0 52 8 8 1 6 43 50 244 -28 52 15 41 52 0 35 53 19 58 50 57 42 54 0 0 51 40 25 1 6 35 50 246 -28 51 48 0 51 32 52 52 52 26 50 29 51 55 0 0 51 12 15 1 6 27 49 247 -27 51 19 51 51 4 41 52 24 25 50 1 31 56 0 0 50 43 37 1 6 19 49 249 -27 50 51 13 50 36 2 51 55 55 49 32 45 57 0 0 50 14 31 1 6 11 48 250 -26 50 22 8 50 6 55 51 26 57 49 3 32 58 0 0 49 44 58 1 6 2 48 252 -25 49 52 36 49 37 21 50 57 32 48 33 52 59 0 0 49 14 58 1 5 54 47 253 -25 49 22 37 49 7 21 50 27 39 48 3 46 60 0 0 48 44 32 1 5 45 47 255 -24 48 52 12 48 36 54 49 57 19 47 33 14 61 0 0 48 13 40 1 5 37 47 256 -23 48 21 20 48 6 2 49 26 32 47 2 17 62 0 0 47 42 23 1 5 29 46 258 -23 47 50 3 47 34 44 48 55 19 46 30 56 63 0 0 47 10 41 1 5 20 45 259 -22 47 18 22 47 3 2 48 23 41 45 59 10 64 0 0 46 38 35 1 5 12 45 260 -21 46 46 16 46 30 55 47 51 38 45 27 1 65 0 0 46 6 6 1 5 3 44 262 -20 46 13 47 45 58 25 47 19 11 44 54 29 66 0 0 45 33 13 1 4 55 44 263 -20 45 40 55 45 25 33 46 46 20 44 21 35 67 0 0 44 59 59 1 4 46 43 264 -19 45 7 41 44 52 19 46 13 7 43 48 21 68 0 0 44 26 24 1 4 38 43 266 -18 44 34 5 44 18 44 45 39 31 43 14 45 69 0 0 43 52 29 1 4 29 42 267 -17 44 0 10 43 44 48 45 5 35 42 40 50 70 0 0 43 18 14 1 4 21 41 268 -16 43 25 55 43 10 33 44 31 19 42 6 37 71 0 0 42 43 40 1 4 12 40 269 -15 42 51 21 42 36 0 43 56 43 41 32 6 72 0 0 42 8 50 1 4 4 40 270 -15 42 16 30 42 1 10 43 21 50 40 57 18 73 0 0 41 33 42 1 3 56 39 271 -14 41 41 23 41 26 3 42 46 39 40 22 14 74 0 0 40 58 20 1 3 47 38 273 -13 41 6 0 40 50 41 42 11 12 39 46 55 75 0 0 40 22 43 1 3 39 38 274 -12 40 30 22 40 15 5 41 35 30 39 11 23 76 0 0 39 46 53 1 3 31 37 275 -11 39 54 32 39 39 15 40 59 34 38 35 38 77 0 0 39 10 51 1 3 23 36 276 -10 39 18 29 39 3 14 40 23 25 37 59 42 78 0 0 38 34 38 1 3 15 35 277 -9 38 42 15 38 27 1 39 47 5 37 23 36 79 0 0 37 58 15 1 3 7 34 278 -8 38 5 51 37 50 39 39 10 34 36 47 20 80 0 0 37 21 44 1 3 0 34 278 -7 37 29 19 37 14 9 38 33 54 36 10 57 81 0 0 36 45 5 1 2 52 33 279 -6 36 52 40 36 37 31 37 57 7 35 34 27 82 0 0 36 8 21 1 2 45 32 280 -5 36 15 54 36 0 48 37 20 13 34 57 51 83 0 0 35 31 31 1 2 37 31 281 -4 35 39 4 35 24 0 36 43 13 34 21 12 84 0 0 34 54 39 1 2 30 30 282 -4 35 2 10 34 47 8 36 6 10 33 44 29 85 0 0 34 17 44 1 2 23 29 283 -3 34 25 14 34 10 14 35 29 3 33 7 45 86 0 0 33 40 48 1 2 16 28 283 -2 33 48 17 33 33 20 34 51 56 32 31 0 87 0 0 33 3 53 1 2 10 27 284 -1 33 11 21 32 56 26 34 14 48 31 54 16 Uncertainty in time = +/- 9 secs [Prediction of 2008 Apr 25.0] Data for the target star ------------------------ * name: TYC 1898-01439-1 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 58 00.5492 DE: +25 34 53.339 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .019, .018 ) * V mag [mag]: 10.2 * B mag [mag]: 11.6 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4597) Consolmagno approx. diameter [km]: 18 approx. diameter ["]: .013 distance from Earth [AU]: 1.93600 * orbital information: orbit source: Preston date of fit: 2008 Apr 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 650 number of rejected observations: 11 time covered by the observations: 1952 Apr 26 - 2007 Aug 06 1 sigma uncertainty ellipse (major, minor, PA): 0.063, 0.051, 92° remarks: * orbital elements for (4597) Consolmagno : Mean anomaly = 228.91276808 deg Arg. of pericenter = 163.70689301 deg Long. of node = 70.31116111 deg Inclination = 4.87473721 deg Eccentricity = 0.12209629 Semimajor axis = 2.60745566 AU Perihelion dist = 2.28909499 AU Mag: H = 12.51, G = 0.15 Epoch of elements : MJD 55171.04800000 TDT (2009 Dec 06.048) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Dec 6 4597 Consolmagno 1h 9.2m UT 10.2 6 58 0.549 25 34 53.34TYC 1898-01439-1 11.6 16.4 18 1.8 1.936 -1.796 7.35 12.2376 25.580 160.43 -22.49 1.1535 0.17358 0.57250 -5.34515 1.61733 -0.00292 0.00004 2000 228.667444200912 5.00000163.706893 70.311161 4.8747370.12209629 2.6074557 2.289095012.1 5.00.15 RATE 2.3408770 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.066 0.054 92 5.21 0.054 0 54581.5020091206_1439-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Apr 25, 09:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org