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
2003-08-10 00:26:15 C 23 01 13.80 -04 36 14.4 d 170
2003-08-10 00:26:35 C 23 01 13.38 -04 36 20.6 c 130
2003-08-10 00:46:12 C 23 01 17.74 -04 37 34.2 c 130
2003-08-10 00:57:37 C 23 01 20.26 -04 38 17.0 c 130
2003-08-10 01:02:04 C 23 01 21.84 -04 38 29.8 d 170
2003-08-10 01:05:00 C 23 01 22.50 -04 38 40.4 d 170
2003-08-10 01:08:50 C 23 01 23.34 -04 38 54.3 d 170
2003-08-10 01:17:53 C 23 01 24.78 -04 39 33.3 c 130
2003-08-11 00:03:25 C 23 07 45.96 -06 19 02.8 c 240
2003-08-11 00:04:20 C 23 07 46.24 -06 19 07.1 c 240
2003-08-11 00:04:47 C 23 07 46.37 -06 19 09.6 c 240
2003-08-11 00:05:15 C 23 07 46.52 -06 19 12.2 c 240
2003-08-11 00:06:09 C 23 07 46.80 -06 19 16.5 c 240
2003-08-11 00:07:04 C 23 07 47.07 -06 19 21.4 c 240
2003-08-11 00:07:58 C 23 07 47.34 -06 19 25.9 c 240
2003-08-11 00:09:20 C 23 07 47.75 -06 19 32.8 c 240
2003-08-11 00:10:42 C 23 07 48.18 -06 19 39.7 c 240
2003-08-11 00:14:21 C 23 07 49.29 -06 19 58.1 c 240
2003-08-11 13:47:00 C 23 12 34.54 -07 35 03.2 14.0 c 608
2003-08-11 14:02:05 C 23 12 40.06 -07 36 36.0 14.0 c 608
2003-08-11 14:17:12 C 23 12 45.61 -07 38 09.1 14.0 c 608
2003-08-11 23:29:17 C 23 16 46.43 -08 40 04.4 c 204
2003-08-11 23:30:30 C 23 16 47.00 -08 40 13.7 c 204
2003-08-11 23:31:43 C 23 16 47.54 -08 40 21.8 c 204
2003-08-11 23:32:56 C 23 16 48.00 -08 40 30.8 c 204
2003-08-12 04:51:57 C 23 19 23.32 -09 20 01.4 r 649
2003-08-12 04:54:10 C 23 19 24.41 -09 20 19.0 r 649
2003-08-12 04:56:22 C 23 19 25.48 -09 20 36.1 r 649
2003-08-13 05:21:24 C 23 34 55.98 -13 18 07.7 r 649
2003-08-13 05:22:32 C 23 34 56.88 -13 18 21.8 r 649
2003-08-13 05:23:41 C 23 34 57.76 -13 18 35.6 r 649
2003-08-13 05:24:50 C 23 34 58.67 -13 18 49.5 r 649
2003-08-13 05:25:59 C 23 34 59.56 -13 19 03.4 r 649
2003-08-13 05:27:08 C 23 35 00.45 -13 19 17.4 r 649
2003-08-13 23:56:22 C 23 53 32.66 -17 49 45.1 c 938
2003-08-13 23:57:22 C 23 53 34.05 -17 50 05.8 c 938
2003-08-13 23:58:23 C 23 53 35.19 -17 50 22.5 c 938
2003-08-13 23:59:23 C 23 53 36.36 -17 50 40.8 c 938
2003-08-14 00:00:25 C 23 53 37.62 -17 50 59.1 c 938
2003-08-14 00:06:21 C 23 53 44.85 -17 52 44.0 c 938
2003-08-14 00:07:23 C 23 53 46.06 -17 53 02.3 c 938
2003-08-14 00:08:23 C 23 53 47.31 -17 53 21.4 c 938
2003-08-14 00:09:25 C 23 53 48.64 -17 53 39.7 c 938
2003-08-14 00:10:26 C 23 53 49.79 -17 53 56.4 c 938
2003-08-14 02:56:18 C 23 57 16.91 -18 44 33.1 o 620
2003-08-14 02:59:35 C 23 57 21.17 -18 45 34.4 o 620
2003-08-14 03:02:49 C 23 57 25.41 -18 46 35.0 o 620
2009-04-10 00:16:36 C 19 45 17.73 +67 59 55.0 o A74
2009-04-10 00:32:00 C 19 44 58.41 +68 00 31.6 o A74
2009-04-10 00:47:24 C 19 44 39.09 +68 01 08.7 o A74
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)