IOTA/IOTA-ES occultation update for (391) Ingeborg / TYC 1169-01471-1 event on 2007 Nov 03, 00:05 UT Visible from Russia, Europe, Africa Summary ------- On 2007 Nov 03 UT, the 20 km diameter asteroid (391) Ingeborg will occult a 11.1 mag star in the constellation Pegasus for observers along a path across Russia, Europe, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.1 mag to 11.7 mag (the magnitude of the asteroid) for at most 1.6 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: 57 * date and approx. time of event: 2007 Nov 03, 00:01 - 2007 Nov 03, 00:09 UT * midpoint of event [JD]: 2454407.50389583 * magnitude of target star: 11.1 * magnitude drop [mag]: 1.1 * estimated maximum duration [s]: 1.6 * Moon: 38 % sunlit, 145° distance * Sun: 136° distance * rough path description: Russia, Europe, Africa The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 1.09 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .041 +/- .032) * 1 sigma uncertainty ellipse (major, minor, PA): ( .041", .032", 88° ) * approx speed of asteroid's shadow [km/s]: 12.2926 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1169-01471-1 by 391 Ingeborg on 2007 Nov 03 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 E. Longitude Latitude U.T. Alt Az Alt o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude ... .. .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. 53 55 32 59 29 24 49 31 30 59 15 13 0 1 35 3 281 -31 54 19 21 58 37 24 47 9 9 59 30 54 ... .. .. .. .. .. 43 27 59 59 51 26 42 9 13 59 10 47 0 1 41 7 275 -34 43 31 43 59 4 8 40 54 12 59 16 16 47 16 26 58 42 47 38 28 54 59 25 25 37 40 57 58 41 46 0 1 48 9 271 -36 38 41 22 58 38 24 36 43 41 58 44 38 41 7 19 58 28 52 34 47 43 58 49 33 34 17 7 58 4 51 0 1 54 11 269 -38 35 6 54 58 3 0 33 29 11 58 6 25 37 3 7 57 57 47 31 50 13 58 8 59 31 31 34 57 23 57 0 2 0 12 266 -40 32 14 44 57 23 0 30 49 40 57 24 43 33 53 51 57 20 9 29 22 15 57 25 46 29 12 33 56 40 45 0 2 6 14 265 -41 29 51 3 56 40 24 28 34 59 56 40 58 31 18 38 56 39 5 27 16 4 56 40 59 27 13 25 55 56 9 0 2 12 15 263 -42 27 48 25 55 56 14 26 39 10 55 55 58 29 7 30 55 55 58 25 26 52 55 55 13 25 29 56 55 10 42 0 2 19 16 262 -43 26 2 9 55 11 5 24 58 19 55 10 13 27 14 39 55 11 36 23 51 21 55 8 52 23 59 8 54 24 43 0 2 25 17 261 -45 24 29 6 54 25 21 23 29 41 54 24 1 25 36 17 54 26 28 22 27 7 54 22 13 22 38 52 53 38 28 0 2 31 18 260 -46 23 6 57 53 39 17 22 11 14 53 37 34 24 9 46 53 40 51 21 12 23 53 35 26 21 27 31 52 52 5 0 2 37 18 259 -47 21 54 0 52 53 4 21 1 25 52 51 3 22 53 7 52 55 0 20 5 46 52 48 37 20 23 49 52 5 42 0 2 43 19 259 -48 20 48 55 52 6 48 19 59 2 52 4 33 21 44 53 52 9 1 19 6 8 52 1 53 19 26 44 51 19 23 0 2 49 20 258 -49 19 50 38 51 20 35 19 3 7 51 18 9 20 43 51 51 23 3 18 12 38 51 15 17 18 35 27 50 33 13 0 2 56 21 258 -50 18 58 18 50 34 30 18 12 51 50 31 53 19 49 7 50 37 9 17 24 31 50 28 53 17 49 17 49 47 12 0 3 2 21 257 -51 18 11 12 49 48 33 17 27 36 49 45 49 18 59 54 49 51 22 16 41 10 49 42 41 17 7 40 49 1 24 0 3 8 22 257 -51 17 28 46 49 2 48 16 46 48 48 59 58 18 15 34 49 5 45 16 2 4 48 56 43 16 30 8 48 15 49 0 3 14 22 257 -52 16 50 29 48 17 16 16 10 0 48 14 20 17 35 36 48 20 20 15 26 48 48 11 1 15 56 17 47 30 29 0 3 20 23 257 -53 16 15 57 47 31 58 15 36 48 47 28 58 16 59 33 47 35 7 14 54 59 47 25 33 15 25 44 46 45 23 0 3 27 23 257 -54 15 44 48 46 46 54 15 6 51 46 43 50 16 27 1 46 50 7 14 26 18 46 40 22 14 58 14 46 0 32 0 3 33 24 257 -55 15 16 44 46 2 5 14 39 53 45 58 58 15 57 42 46 5 22 14 0 28 45 55 27 14 33 29 45 15 56 0 3 39 24 257 -55 14 51 29 45 17 30 14 15 38 45 14 21 15 31 19 45 20 50 13 37 16 45 10 48 14 11 16 44 31 35 0 3 45 25 257 -56 14 28 49 44 33 11 13 53 53 44 29 59 15 7 36 44 36 33 13 16 28 44 26 25 13 51 24 43 47 30 0 3 51 25 257 -57 14 8 31 43 49 6 13 34 25 43 45 53 14 46 21 43 52 30 12 57 54 43 42 17 13 33 42 43 3 39 0 3 58 25 257 -58 13 50 25 43 5 15 13 17 6 43 2 1 14 27 23 43 8 42 12 41 24 42 58 24 13 18 0 42 20 2 0 4 4 26 257 -58 13 34 22 42 21 39 13 1 46 42 18 24 14 10 31 42 25 7 12 26 48 42 14 46 13 4 11 41 36 40 0 4 10 26 257 -59 13 20 13 41 38 17 12 48 16 41 35 1 13 55 38 41 41 45 12 14 0 41 31 23 12 52 7 40 53 31 0 4 16 26 258 -60 13 7 51 40 55 8 12 36 31 40 51 52 13 42 35 40 58 37 12 2 53 40 48 14 12 41 42 40 10 35 0 4 22 27 258 -60 12 57 9 40 12 13 12 26 22 40 8 57 13 31 15 40 15 42 11 53 21 40 5 18 12 32 51 39 27 52 0 4 29 27 258 -61 12 48 2 39 29 30 12 17 46 39 26 14 13 21 32 39 33 0 11 45 17 39 22 35 12 25 27 38 45 22 0 4 35 27 258 -62 12 40 24 38 47 0 12 10 37 38 43 44 13 13 22 38 50 29 11 38 39 38 40 6 12 19 27 38 3 4 0 4 41 27 259 -62 12 34 10 38 4 41 12 4 50 38 1 25 13 6 38 38 8 10 11 33 20 37 57 48 12 14 46 37 20 57 0 4 47 27 259 -63 12 29 17 37 22 34 12 0 22 37 19 19 13 1 18 37 26 3 11 29 18 37 15 42 12 11 22 36 39 1 0 4 53 28 259 -63 12 25 41 36 40 38 11 57 8 36 37 23 12 57 16 36 44 6 11 26 29 36 33 47 12 9 10 35 57 15 0 4 59 28 260 -64 12 23 18 35 58 52 11 55 7 35 55 38 12 54 29 36 2 19 11 24 50 35 52 2 12 8 7 35 15 40 0 5 6 28 260 -64 12 22 6 35 17 16 11 54 14 35 14 3 12 52 55 35 20 43 11 24 18 35 10 28 12 8 12 34 34 14 0 5 12 28 261 -65 12 22 2 34 35 50 11 54 28 34 32 37 12 52 31 34 39 15 11 24 50 34 29 4 12 9 22 33 52 57 0 5 18 28 261 -65 12 23 3 33 54 32 11 55 46 33 51 21 12 53 14 33 57 57 11 26 26 33 47 49 12 11 35 33 11 49 0 5 24 28 261 -66 12 25 9 33 13 23 11 58 6 33 10 13 12 55 3 33 16 47 11 29 2 33 6 42 12 14 49 32 30 48 0 5 30 28 262 -66 12 28 16 32 32 22 12 1 27 32 29 13 12 57 55 32 35 45 11 32 38 32 25 44 12 19 3 31 49 56 0 5 37 28 262 -67 12 32 24 31 51 29 12 5 47 31 48 21 13 1 49 31 54 50 11 37 11 31 44 53 12 24 15 31 9 10 0 5 43 28 263 -67 12 37 31 31 10 43 12 11 5 31 7 36 13 6 44 31 14 2 11 42 41 31 4 10 12 30 26 30 28 31 0 5 49 28 263 -67 12 43 36 30 30 3 12 17 21 30 26 58 13 12 38 30 33 21 11 49 7 30 23 33 12 37 32 29 47 58 0 5 55 28 263 -68 12 50 38 29 49 29 12 24 32 29 46 26 13 19 31 29 52 45 11 56 28 29 43 2 12 45 35 29 7 30 0 6 1 28 264 -68 12 58 38 29 9 1 12 32 39 29 5 59 13 27 22 29 12 15 12 4 42 29 2 37 12 54 34 28 27 8 0 6 8 28 264 -68 13 7 33 28 28 37 12 41 40 28 25 37 13 36 10 28 31 50 12 13 51 28 22 17 13 4 28 27 46 50 0 6 14 28 265 -68 13 17 25 27 48 19 12 51 37 27 45 20 13 45 56 27 51 29 12 23 54 27 42 2 13 15 18 27 6 36 0 6 20 28 265 -69 13 28 12 27 8 4 13 2 29 27 5 7 13 56 39 27 11 12 12 34 50 27 1 52 13 27 3 26 26 26 0 6 26 28 266 -69 13 39 56 26 27 52 13 14 15 26 24 58 14 8 20 26 30 59 12 46 40 26 21 44 13 39 43 25 46 18 0 6 32 27 266 -69 13 52 36 25 47 44 13 26 57 25 44 52 14 20 58 25 50 48 12 59 23 25 41 40 13 53 21 25 6 13 0 6 38 27 267 -69 14 6 12 25 7 38 13 40 34 25 4 48 14 34 34 25 10 40 13 13 1 25 1 39 14 7 55 24 26 10 0 6 45 27 267 -69 14 20 47 24 27 34 13 55 8 24 24 46 14 49 10 24 30 33 13 27 35 24 21 39 14 23 27 23 46 8 0 6 51 27 268 -69 14 36 20 23 47 31 14 10 39 23 44 45 15 4 46 23 50 27 13 43 4 23 41 41 14 39 58 23 6 7 0 6 57 27 268 -69 14 52 53 23 7 28 14 27 8 23 4 45 15 21 23 23 10 22 13 59 30 23 1 44 14 57 30 22 26 6 0 7 3 26 268 -69 15 10 27 22 27 25 14 44 38 22 24 45 15 39 2 22 30 16 14 16 55 22 21 47 15 16 4 21 46 4 0 7 9 26 269 -69 15 29 4 21 47 22 15 3 9 21 44 45 15 57 47 21 50 9 14 35 20 21 41 49 15 35 42 21 6 1 0 7 16 26 269 -69 15 48 46 21 7 17 15 22 43 21 4 43 16 17 38 21 10 1 14 54 46 21 1 51 15 56 26 20 25 56 0 7 22 25 270 -68 16 9 36 20 27 11 15 43 23 20 24 40 16 38 39 20 29 51 15 15 17 20 21 51 16 18 20 19 45 47 0 7 28 25 270 -68 16 31 35 19 47 1 16 5 12 19 44 33 17 0 52 19 49 37 15 36 54 19 41 48 16 41 27 19 5 36 0 7 34 25 271 -68 16 54 49 19 6 47 16 28 11 19 4 23 17 24 20 19 9 19 15 59 40 19 1 42 17 5 49 18 25 19 0 7 40 24 271 -68 17 19 19 18 26 29 16 52 26 18 24 9 17 49 9 18 28 56 16 23 39 18 21 32 17 31 31 17 44 58 0 7 47 24 272 -67 17 45 10 17 46 5 17 18 0 17 43 49 18 15 21 17 48 27 16 48 54 17 41 17 17 58 38 17 4 29 0 7 53 23 272 -67 18 12 28 17 5 34 17 44 57 17 3 23 18 43 3 17 7 51 17 15 30 17 0 55 18 27 16 16 23 53 0 7 59 23 272 -66 18 41 17 16 24 55 18 13 22 16 22 49 19 12 20 16 27 6 17 43 32 16 20 27 18 57 30 15 43 8 0 8 5 22 273 -66 19 11 46 15 44 7 18 43 24 15 42 7 19 43 21 15 46 12 18 13 6 15 39 50 19 29 30 15 2 12 0 8 11 22 273 -65 19 44 1 15 3 8 19 15 8 15 1 14 20 16 13 15 5 5 18 44 18 14 59 4 20 3 23 14 21 3 0 8 18 21 274 -65 20 18 12 14 21 56 19 48 43 14 20 9 20 51 7 14 23 46 19 17 17 14 18 6 20 39 20 13 39 41 0 8 24 20 274 -64 20 54 31 13 40 30 20 24 20 13 38 51 21 28 15 13 42 11 19 52 12 13 36 55 21 17 35 12 58 2 0 8 30 20 274 -63 21 33 11 12 58 47 21 2 11 12 57 16 22 7 53 13 0 17 20 29 14 12 55 29 21 58 24 12 16 4 0 8 36 19 275 -62 22 14 28 12 16 44 21 42 32 12 15 23 22 50 18 12 18 3 21 8 38 12 13 46 22 42 5 11 33 44 0 8 42 18 275 -62 22 58 44 11 34 18 22 25 41 11 33 8 23 35 55 11 35 23 21 50 41 11 31 42 23 29 5 10 50 57 0 8 48 17 276 -61 23 46 25 10 51 24 23 12 1 10 50 28 24 25 14 10 52 14 22 35 42 10 49 15 24 19 56 10 7 39 0 8 55 16 276 -60 24 38 6 10 7 57 24 2 5 10 7 17 25 18 55 10 8 28 23 24 10 10 6 20 25 15 21 9 23 42 0 9 1 15 276 -59 25 34 34 9 23 51 24 56 30 9 23 29 26 17 53 9 23 57 24 16 39 9 22 51 26 16 20 8 38 57 0 9 7 14 277 -57 26 36 53 8 38 53 25 56 15 8 38 56 27 23 28 8 38 29 25 13 56 8 38 42 27 24 20 7 53 11 0 9 13 13 277 -56 27 46 40 7 52 51 27 2 36 7 53 26 28 37 42 7 51 46 26 17 7 7 53 41 28 41 38 7 6 4 0 9 19 12 277 -55 29 6 29 7 5 20 28 17 38 7 6 39 30 4 0 7 3 16 27 27 48 7 7 35 30 12 10 6 16 59 0 9 26 10 277 -53 30 40 55 6 15 40 29 44 43 6 18 6 31 49 6 6 11 59 28 48 35 6 19 59 32 3 59 5 24 45 0 9 32 8 278 -51 32 39 56 5 22 21 31 30 30 5 26 46 34 10 31 5 15 19 30 24 4 5 30 12 34 40 21 4 25 54 0 9 38 5 278 -48 35 37 22 4 20 22 33 52 4 4 30 8 ... .. .. .. .. .. 32 24 12 4 36 46 ... .. .. .. .. .. .. .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. 35 22 29 3 34 42 Data for the target star ------------------------ * name: TYC 1169-01471-1 * constellation : Pegasus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 23 34 10.8002 DE: +08 18 48.170 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .027, .026 ) * V mag [mag]: 11.1 * B mag [mag]: 11.8 * Apparent position with proper motion RA(deg): 353.6495615694 DE(deg): 8.3595034218 * Equation of equinoxes (radians) : 0.000028619421869 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (391) Ingeborg approx. diameter [km]: 20 approx. diameter ["]: .036 distance from Earth [AU]: 0.76900 * orbital information: orbit source: Preston date of fit: 2007 Sep 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 638 number of rejected observations: 38 time covered by the observations: 1901 Aug 08 - 2007 Sep 19 1 sigma uncertainty ellipse (major, minor, PA): 0.031, 0.019, 86° remarks: * orbital elements for (391) Ingeborg : Mean anomaly = 10.82731247 deg Arg. of pericenter = 146.65508060 deg Long. of node = 212.98728889 deg Inclination = 23.15942818 deg Eccentricity = 0.30540292 Semimajor axis = 2.32066447 AU Perihelion dist = 1.61192678 AU Mag: H = 10.76, G = 0.15 Epoch of elements : MJD 54407.00400000 TDT (2007 Nov 03.004) ------ occelmnt file for Occult BEGIN ----------------------------------- 2007 Nov 03 391 Ingeborg 0h 5.6m UT 11.1 23 34 10.800 8 18 48.17TYC 1169-01471-1 11.8 11.7 20 1.6 0.769 2.793 -67.55 310.263 8.334 174.50 -14.87 0.0935 .75050 .46068 3.62689 -5.91485 0.00319 0.00072 2000 8.8746293320071027.00000146.655081212.987289 23.1594280.305402922.320664471.6119267810.15 0.15 RATE 2.7879536 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 Meas 0.041 0.032 87.7 2.090 0.039 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2007 Sep 26, 15:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org