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
2018-05-06 08:12:20 C 14 38 16.32 +38 53 39.6 U 703
2018-05-06 08:19:55 C 14 38 15.26 +38 53 28.0 U 703
2018-05-09 11:32:29 C 14 28 47.84 +36 56 29.7 U T05
2018-05-09 11:39:12 C 14 28 47.04 +36 56 18.8 U T05
2018-05-09 12:04:58 C 14 28 44.03 +36 55 39.2 U T05
2018-05-09 12:08:45 C 14 28 43.55 +36 55 33.2 U T05
2018-05-10 07:50:16 C 14 26 33.20 +36 25 34.9 U 703
2018-05-10 07:57:49 C 14 26 32.36 +36 25 23.2 U 703
2018-05-10 08:05:22 C 14 26 31.56 +36 25 12.0 U 703
2018-05-10 08:12:55 C 14 26 30.72 +36 25 00.5 U 703
2018-05-14 07:52:17 C 14 17 25.73 +34 03 57.7 U 703
2018-05-14 07:59:50 C 14 17 25.03 +34 03 47.5 U 703
2018-05-14 08:07:23 C 14 17 24.35 +34 03 36.5 U 703
2018-05-14 08:14:57 C 14 17 23.68 +34 03 25.7 U 703
2018-05-15 10:37:19 C 14 15 16.87 +33 25 54.6 U T08
2018-05-15 10:55:11 C 14 15 15.54 +33 25 29.6 U T08
2018-05-15 11:11:20 C 14 15 14.10 +33 25 05.9 U T08
2018-05-15 11:24:23 C 14 15 13.06 +33 24 47.7 U T08
2018-05-15 11:44:49 C 14 15 11.41 +33 24 18.5 U T08
2018-05-19 07:10:13 C 14 08 59.55 +31 18 31.2 U 703
2018-05-19 07:17:45 C 14 08 59.05 +31 18 21.4 U 703
2018-05-19 07:25:18 C 14 08 58.57 +31 18 11.2 U 703
2018-05-19 07:32:51 C 14 08 58.11 +31 18 00.5 U 703
2018-05-19 10:08:08 C 14 08 48.99 +31 14 35.1 U T08
2018-05-19 10:20:13 C 14 08 48.22 +31 14 18.6 U T08
2018-05-19 10:21:32 C 14 08 48.19 +31 14 16.8 U T08
2018-05-19 10:26:14 C 14 08 47.88 +31 14 11.9 U T08
2018-05-19 10:47:44 C 14 08 46.53 +31 13 41.2 U T08
2018-05-23 05:20:13 C 14 04 08.77 +29 16 01.3 U 703
2018-05-23 05:27:48 C 14 04 08.40 +29 15 50.7 U 703
2018-05-23 05:35:22 C 14 04 07.98 +29 15 42.2 U 703
2018-05-23 05:42:57 C 14 04 07.69 +29 15 32.6 U 703
2018-05-24 04:11:40 C 14 03 10.50 +28 47 19.2 U G96
2018-05-24 04:19:09 C 14 03 10.18 +28 47 09.7 U G96
2018-05-24 04:26:39 C 14 03 09.85 +28 47 00.4 U G96
2018-05-24 04:34:09 C 14 03 09.51 +28 46 51.2 U G96
2018-06-03 05:51:28 C 13 56 42.56 +24 06 55.8 U 703
2018-06-03 05:59:05 C 13 56 42.44 +24 06 46.0 U 703
2018-06-03 06:06:42 C 13 56 42.28 +24 06 38.7 U 703
2018-06-03 06:14:19 C 13 56 42.18 +24 06 30.4 U 703
2018-06-09 06:31:02 C 13 55 28.13 +21 36 49.1 U G96
2018-06-09 06:38:38 C 13 55 28.10 +21 36 41.8 U G96
2018-06-09 06:46:13 C 13 55 28.07 +21 36 33.8 U G96
2018-07-10 07:05:19 C 14 07 11.819 +11 13 56.09 U F51
2018-07-10 07:23:00 C 14 07 12.310 +11 13 43.52 U F51
2018-07-10 07:40:39 C 14 07 12.817 +11 13 31.04 U F51
2019-06-03 12:28:35 C 20 12 34.560 -03 00 36.75 U F51
2019-06-03 12:47:00 C 20 12 34.135 -03 00 34.44 U F51
2019-06-03 13:05:26 C 20 12 33.700 -03 00 31.98 U F51
2019-06-03 13:23:53 C 20 12 33.271 -03 00 29.39 U F51
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)