37655 Illapa (1994 PM)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7524459845 ± 2.00e+00
Semi-major axis (a)1.4777488909 AU ± 3.00e+00
Inclination (i)18.03316723° ± 4.00e+00
Long. of Asc. Node (Ω)139.51239265° ± 5.00e+00
Arg. of Perihelion (ω)303.91768440° ± 6.00e+00
Mean Anomaly (M)114.45024937° ± 3.42e-06
Mean Motion (n)0.5486701244°/day ± 1.67e+00
Perihelion dist (q)0.36582267 AU ± 3.05e+00
Aphelion dist (Q)2.58967511 AU ± 6.03e+00
Orbital Period1.79639138 yr ± 5.47e+00
NGA Modelr2
A2-1.04259752e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.365″
Uncertainty0
Orbit TypeApollo
MOID0.024446 AU
Observations Used638
Oppositions13
Arc Total1994-2024
First Observation Used1994-08-01
Last Observation Used2024-06-27
Observations (664)
Date Type RA Dec Mag Band Observatory
2003-08-01 08:52:44 C 22 38 14.79 +00 53 47.4 16.3 c 704
2003-08-01 09:07:42 C 22 38 15.49 +00 53 38.2 16.2 c 704
2003-08-01 21:36:12 C 22 38 59.84 +00 45 34.1 a 589
2003-08-01 21:51:02 C 22 39 00.64 +00 45 24.1 a 589
2003-08-01 22:10:43 C 22 39 01.70 +00 45 10.8 a 589
2003-08-01 22:28:48 C 22 39 02.64 +00 44 58.8 a 589
2003-08-01 22:59:06 C 22 39 04.22 +00 44 38.9 c 108
2003-08-01 23:00:37 C 22 39 04.43 +00 44 33.2 c J93
2003-08-01 23:02:10 C 22 39 04.39 +00 44 36.6 c 108
2003-08-01 23:02:41 C 22 39 04.62 +00 44 32.8 c J93
2003-08-01 23:04:43 C 22 39 04.65 +00 44 31.3 c J93
2003-08-01 23:05:29 C 22 39 04.59 +00 44 31.1 c 108
2003-08-01 23:09:49 C 22 39 04.79 +00 44 31.5 c 108
2003-08-01 23:16:21 C 22 39 05.37 +00 44 22.6 c J93
2003-08-01 23:19:28 C 22 39 05.47 +00 44 21.9 c J93
2003-08-01 23:43:22 C 22 39 06.38 +00 44 05.2 d 557
2003-08-02 00:02:30 C 22 39 07.38 +00 43 52.2 d 557
2003-08-02 01:21:26 C 22 39 11.51 +00 42 58.2 d 557
2003-08-02 01:34:12 C 22 39 12.17 +00 42 49.4 d 557
2003-08-02 22:15:10 C 22 40 31.14 +00 27 27.8 c 246
2003-08-02 22:16:34 C 22 40 31.23 +00 27 26.7 c 246
2003-08-02 22:17:31 C 22 40 31.28 +00 27 26.1 c 246
2003-08-02 22:18:42 C 22 40 31.35 +00 27 25.4 c 246
2003-08-02 22:21:43 C 22 40 31.85 +00 27 20.8 c J93
2003-08-02 22:23:45 C 22 40 31.94 +00 27 19.4 c J93
2003-08-02 22:24:49 C 22 40 31.70 +00 27 19.3 d 557
2003-08-02 22:25:48 C 22 40 32.03 +00 27 17.7 c J93
2003-08-02 23:18:17 C 22 40 34.99 +00 26 37.3 c 215
2003-08-02 23:18:42 C 22 40 35.03 +00 26 36.9 c 215
2003-08-02 23:19:06 C 22 40 35.08 +00 26 37.0 c 215
2003-08-02 23:47:43 C 22 40 36.58 +00 26 12.6 d 557
2003-08-03 00:29:11 C 22 40 39.00 +00 25 38.7 d 557
2003-08-03 01:42:30 C 22 40 43.29 +00 24 38.8 d 557
2003-08-03 22:31:35 C 22 42 12.41 +00 06 08.4 d 557
2003-08-03 23:35:09 C 22 42 16.64 +00 05 07.0 d 557
2003-08-04 00:22:58 C 22 42 19.82 +00 04 20.5 d 557
2003-08-04 01:01:14 C 22 42 22.37 +00 03 43.1 d 557
2003-08-04 22:09:06 C 22 44 04.77 -00 18 45.2 d 557
2003-08-04 22:43:00 C 22 44 07.39 -00 19 24.5 d 557
2003-08-04 23:19:14 C 22 44 10.18 -00 20 06.6 d 557
2003-08-05 01:02:28 C 22 44 18.11 -00 22 07.7 d 557
2003-08-05 01:25:26 C 22 44 20.12 -00 22 34.0 c 198
2003-08-05 01:26:29 C 22 44 20.20 -00 22 35.3 c 198
2003-08-05 01:42:29 C 22 44 21.45 -00 22 54.2 c 198
2003-08-05 07:53:24 C 22 44 55.17 -00 30 15.9 15.5 c 704
2003-08-05 08:08:34 C 22 44 56.35 -00 30 34.9 15.8 c 704
2003-08-05 08:23:41 C 22 44 57.53 -00 30 53.7 15.7 c 704
2003-08-05 08:38:49 C 22 44 58.71 -00 31 12.6 15.6 c 704
2003-08-05 08:53:59 C 22 44 59.86 -00 31 31.3 16.5 c 704
2003-08-05 23:34:28 C 22 46 24.79 -00 51 20.9 c J93
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-08-19 17:30:00 -1329216.328 4 Hz 8560 -14 -14
2012-08-13 12:00:00 96859666.31 2 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)