363027 (1998 ST27)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5297679948 ± 2.00e+00
Semi-major axis (a)0.8198152879 AU ± 3.00e+00
Inclination (i)21.05065934° ± 4.00e+00
Long. of Asc. Node (Ω)197.51457964° ± 5.00e+00
Arg. of Perihelion (ω)322.43883834° ± 6.00e+00
Mean Anomaly (M)88.40523181° ± 9.78e-06
Mean Motion (n)1.3278170992°/day ± 7.29e+00
Perihelion dist (q)0.38550339 AU ± 2.16e+00
Aphelion dist (Q)1.25412719 AU ± 4.87e+00
Orbital Period0.74229070 yr ± 4.07e+00
NGA Modelr2
A21.74180921e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.474″
Uncertainty0
Orbit TypeAten
MOID0.009115 AU
Observations Used934
Oppositions9
Arc Total1998-2024
First Observation Used1998-09-24
Last Observation Used2024-10-14
Observations (1124)
Date Type RA Dec Mag Band Observatory
2024-10-09 22:42:37 C 23 51 00.274 +14 38 23.21 V M22
2024-10-09 23:23:18 C 23 49 57.950 +14 20 49.20 V M22
2024-10-09 23:59:09 C 23 49 02.849 +14 05 08.74 V M22
2024-10-10 01:28:26 V 23 47 13.68 +13 20 39.8 V 270
2024-10-10 01:28:26 v 1 262.25295 +30.53186 270
2024-10-10 01:34:51 V 23 47 03.81 +13 17 48.9 V 270
2024-10-10 01:34:51 v 1 262.25295 +30.53186 270
2024-10-10 01:41:16 V 23 46 53.81 +13 14 57.8 V 270
2024-10-10 01:41:16 v 1 262.25295 +30.53186 270
2024-10-10 01:47:53 V 23 46 43.50 +13 11 59.1 V 270
2024-10-10 01:47:53 v 1 262.25295 +30.53186 270
2024-10-10 02:14:32 V 23 46 04.54 +12 59 32.0 V 270
2024-10-10 02:14:32 v 1 242.98579 +33.20755 270
2024-10-10 02:20:49 C 23 45 53.58 +12 56 51.9 U V16
2024-10-10 02:25:30 C 23 45 46.18 +12 54 44.0 U V16
2024-10-10 02:30:12 C 23 45 38.80 +12 52 36.2 U V16
2024-10-10 02:34:53 C 23 45 31.38 +12 50 28.4 U V16
2024-10-10 02:39:10 V 23 45 25.91 +12 48 20.2 V 270
2024-10-10 02:39:10 v 1 242.98579 +33.20755 270
2024-10-10 02:39:33 C 23 45 23.95 +12 48 20.2 U V16
2024-10-10 02:44:14 C 23 45 16.48 +12 46 11.7 U V16
2024-10-10 02:58:25 V 23 44 55.30 +12 39 28.4 V 270
2024-10-10 02:58:25 v 1 242.98579 +33.20755 270
2024-10-10 03:22:07 V 23 44 17.63 +12 28 37.6 V 270
2024-10-10 03:22:07 v 1 242.98579 +33.20755 270
2024-10-10 11:21:09 V 23 31 12.20 +08 29 53.6 V 270
2024-10-10 11:21:09 v 1 140.17437 +36.06238 270
2024-10-10 11:28:25 V 23 30 59.23 +08 26 00.8 V 270
2024-10-10 11:28:25 v 1 140.17437 +36.06238 270
2024-10-10 11:34:38 V 23 30 48.11 +08 22 41.6 V 270
2024-10-10 11:34:38 v 1 140.17437 +36.06238 270
2024-10-10 11:40:56 V 23 30 36.83 +08 19 20.7 V 270
2024-10-10 11:40:56 v 1 140.17437 +36.06238 270
2024-10-10 20:56:26 C 23 13 42.960 +02 58 36.98 V Z80
2024-10-10 21:04:29 C 23 13 26.969 +02 53 40.38 V Z80
2024-10-10 21:12:30 C 23 13 11.004 +02 48 43.96 V Z80
2024-10-11 02:11:05 V 23 03 23.84 -00 19 56.7 V 270
2024-10-11 02:11:05 v 1 262.25308 +30.53191 270
2024-10-11 02:17:38 V 23 03 09.99 -00 24 14.8 V 270
2024-10-11 02:17:38 v 1 262.25308 +30.53191 270
2024-10-11 02:24:11 V 23 02 56.04 -00 28 33.8 V 270
2024-10-11 02:24:11 v 1 262.25308 +30.53191 270
2024-10-11 02:30:55 V 23 02 41.67 -00 33 01.7 V 270
2024-10-11 02:30:55 v 1 262.25308 +30.53191 270
2024-10-11 18:22:17 B 22 27 03.929 -11 39 57.28 Z M49
2024-10-11 18:34:33 B 22 26 32.837 -11 49 02.77 Z M49
2024-10-11 18:46:46 B 22 26 01.775 -11 58 06.38 Z M49
2024-10-11 19:18:26 B 22 24 40.990 -12 21 34.19 Z M49
2024-10-11 19:30:41 B 22 24 09.563 -12 30 39.51 Z M49
2024-10-11 19:42:55 B 22 23 38.158 -12 39 43.38 Z M49
Radar Observations (13)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-10-07 01:39:00 77102108.2 12 us 2380 -1 -1
2001-10-09 00:34:00 107972.7 1 Hz 2380 -1 -1
2001-10-09 00:54:00 67766228.3 8 us 2380 -1 -1
2001-10-09 02:47:00 67469526.191 1.5 us 2380 -1 -1
2004-10-03 10:24:00 139197784 2 us 2380 -1 -1
2004-10-04 09:50:00 133969457.4 2 us 2380 -1 -1
2004-10-06 11:14:00 125499084.5 2 us 2380 -1 -1
2024-10-04 11:00:00 77195497.4 10 us 8560 -14 -14
2024-10-04 11:30:00 77005452.764 1 us 8560 -14 -14
2024-10-05 06:20:00 69794337.38 2 us 8560 -14 -14
2024-10-09 04:10:00 36603483 1 us 8560 -14 -14
2024-10-11 01:40:00 25630281.69 0.5 us 8560 -14 -14
2024-10-12 01:30:00 23741602 0.5 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)