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
2021-07-07 12:04:47 C 23 13 57.25 +03 47 39.4 V T05
2021-07-07 12:33:47 C 23 14 00.59 +03 47 52.0 V T05
2021-07-08 09:53:58 C 23 16 33.88 +03 56 58.4 V 703
2021-07-08 10:00:37 C 23 16 34.67 +03 57 01.6 V 703
2021-07-08 10:07:17 C 23 16 35.43 +03 57 04.6 V 703
2021-07-08 10:13:56 C 23 16 36.29 +03 57 07.2 V 703
2021-07-09 08:57:12 C 23 19 26.38 +04 07 00.6 V 703
2021-07-09 09:04:46 C 23 19 27.30 +04 07 04.0 V 703
2021-07-09 09:12:20 C 23 19 28.24 +04 07 07.2 V 703
2021-07-09 09:19:53 C 23 19 29.16 +04 07 10.1 V 703
2021-07-09 12:56:42 C 23 19 56.78 +04 08 49.1 V T08
2021-07-09 13:00:41 C 23 19 57.25 +04 08 50.9 V T08
2021-07-09 13:19:38 C 23 19 59.63 +04 08 59.2 V T08
2021-07-09 13:35:00 C 23 20 01.53 +04 09 06.1 V T08
2021-07-13 12:48:29 C 23 33 26.61 +04 52 42.2 V T08
2021-07-13 12:51:47 C 23 33 27.09 +04 52 43.9 V T08
2021-07-13 12:55:46 C 23 33 27.69 +04 52 45.6 V T08
2021-07-13 13:03:08 C 23 33 28.80 +04 52 49.4 V T08
2021-07-17 09:42:59 C 23 49 33.99 +05 39 17.6 V T08
2021-07-17 09:56:19 C 23 49 36.54 +05 39 25.2 V T08
2021-07-17 10:28:32 C 23 49 42.74 +05 39 42.1 V T08
2021-07-17 11:24:20 C 23 49 53.46 +05 40 12.1 V T08
2021-07-17 11:29:40 C 23 49 54.46 +05 40 14.8 V T08
2021-07-17 11:45:04 C 23 49 57.42 +05 40 23.0 V T08
2021-07-19 12:10:36 C 00 00 03.46 +06 06 51.0 V T05
2021-07-19 12:16:34 C 00 00 04.75 +06 06 54.1 V T05
2021-07-19 12:24:32 C 00 00 06.46 +06 06 58.3 V T05
2021-07-19 12:39:02 C 00 00 09.63 +06 07 07.0 V T05
2021-07-22 13:56:34 C 00 18 27.09 +06 50 40.2 V T08
2021-07-22 14:10:58 C 00 18 31.02 +06 50 49.7 V T08
2021-07-22 14:46:58 C 00 18 40.83 +06 51 12.0 V T08
2021-07-22 14:56:50 C 00 18 43.52 +06 51 18.1 V T08
2021-07-22 17:18:34 C 00 19 24.696 +06 53 03.59 V P07
2021-07-22 17:19:01 C 00 19 24.847 +06 53 03.98 V P07
2021-07-22 19:36:02 C 00 20 02.890 +06 54 31.10 V P07
2021-07-22 19:36:45 C 00 20 03.091 +06 54 31.36 V P07
2021-07-22 20:54:37 C 00 20 24.778 +06 55 20.86 V P07
2021-07-22 21:55:40 C 00 20 41.820 +06 55 58.98 V P07
2021-07-25 11:42:43 C 00 40 24.08 +07 36 28.5 V T08
2021-07-25 11:56:27 C 00 40 28.85 +07 36 38.5 V T08
2021-07-25 12:05:05 C 00 40 31.86 +07 36 44.6 V T08
2021-07-25 12:15:02 C 00 40 35.33 +07 36 51.5 V T08
2021-08-02 14:07:38 C 02 20 43.72 +09 51 32.9 V T08
2021-08-02 14:12:17 C 02 20 47.00 +09 51 35.5 V T08
2021-08-02 14:43:58 C 02 21 09.41 +09 51 53.1 V T08
2021-08-02 14:58:18 C 02 21 19.55 +09 52 01.0 V T08
2021-08-02 19:44:04 C 02 24 46.97 +09 54 23.9 q D29
2021-08-02 19:59:21 C 02 24 58.00 +09 54 33.7 q D29
2021-08-02 20:14:37 C 02 25 09.07 +09 54 41.9 q D29
2021-08-03 06:13:21 S 02 32 30.742 +09 59 48.73 L C51
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)