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
2024-09-30 00:16:52 C 01 54 06.15 +40 25 29.2 V C40
2024-09-30 00:19:54 C 01 54 05.63 +40 25 25.7 V C40
2024-09-30 00:22:20 C 01 54 07.02 +40 25 19.2 Y 557
2024-09-30 00:22:56 C 01 54 05.09 +40 25 21.9 V C40
2024-09-30 00:25:58 C 01 54 04.56 +40 25 18.3 V C40
2024-09-30 00:29:01 C 01 54 04.05 +40 25 14.7 V C40
2024-09-30 00:32:04 C 01 54 03.53 +40 25 10.9 V C40
2024-09-30 00:35:07 C 01 54 02.98 +40 25 07.2 V C40
2024-09-30 00:38:09 C 01 54 02.46 +40 25 03.7 V C40
2024-09-30 00:41:11 C 01 54 01.93 +40 24 59.9 V C40
2024-09-30 01:29:26 C 01 53 55.36 +40 24 01.0 Y 557
2024-09-30 08:01:02 C 01 52 54.858 +40 16 41.12 V 703
2024-09-30 08:04:22 C 01 52 54.217 +40 16 37.24 V 703
2024-09-30 08:07:43 C 01 52 53.584 +40 16 33.13 V 703
2024-09-30 08:11:05 C 01 52 52.968 +40 16 29.10 V 703
2024-09-30 09:56:59 C 01 52 37.524 +40 14 29.58 V T05
2024-09-30 09:59:36 C 01 52 37.032 +40 14 26.56 V T05
2024-09-30 10:03:37 C 01 52 36.262 +40 14 21.98 V T05
2024-09-30 10:10:50 C 01 52 34.884 +40 14 13.38 V T05
2024-09-30 11:06:55 C 01 52 23.988 +40 13 07.90 V T08
2024-09-30 11:09:35 C 01 52 23.472 +40 13 04.58 V T08
2024-09-30 11:14:15 C 01 52 22.560 +40 12 58.82 V T08
2024-09-30 11:31:45 C 01 52 19.150 +40 12 37.22 V T08
2024-10-01 12:07:50 C 01 47 47.066 +39 37 47.50 V T08
2024-10-01 12:13:49 C 01 47 45.691 +39 37 37.60 V T08
2024-10-01 12:54:53 C 01 47 36.254 +39 36 29.66 V T08
2024-10-01 13:36:01 C 01 47 26.846 +39 35 19.46 V T08
2024-10-01 16:11:03 C 01 47 02.66 +39 29 58.5 q 168
2024-10-01 16:53:37 C 01 46 53.63 +39 28 53.1 q 168
2024-10-01 17:33:34 C 01 46 44.94 +39 27 50.8 q 168
2024-10-01 18:17:33 C 01 46 35.23 +39 26 41.1 q 168
2024-10-01 19:01:38 C 01 46 25.35 +39 25 29.7 q 168
2024-10-01 19:39:00 C 01 46 19.927 +39 24 13.50 Z C23
2024-10-01 19:41:09 C 01 46 19.442 +39 24 09.18 Z C23
2024-10-01 19:41:35 C 01 46 16.29 +39 24 23.8 q 168
2024-10-01 20:15:41 C 01 46 08.47 +39 23 26.6 q 168
2024-10-01 21:10:09 C 01 45 59.738 +39 21 47.84 Z C23
2024-10-02 07:54:16 C 01 43 33.175 +39 02 51.61 V 703
2024-10-02 07:59:25 C 01 43 31.933 +39 02 41.24 V 703
2024-10-02 08:04:03 C 01 43 30.684 +39 02 31.60 V 703
2024-10-02 08:08:26 C 01 43 29.532 +39 02 23.46 V 703
2024-10-02 11:42:04 C 01 42 38.126 +38 55 42.74 V T08
2024-10-02 12:22:14 C 01 42 27.216 +38 54 20.20 V T08
2024-10-02 13:02:52 C 01 42 16.200 +38 52 54.44 V T08
2024-10-02 13:38:42 C 01 42 06.514 +38 51 37.08 V T08
2024-10-02 16:19:30 C 01 41 35.49 +38 44 53.0 q 168
2024-10-02 17:46:02 C 01 41 13.11 +38 41 59.9 q 168
2024-10-02 18:59:04 C 01 40 53.66 +38 39 29.1 q 168
2024-10-02 19:20:51 B 01 40 49.81 +38 38 51.0 X L76
2024-10-02 19:27:08 B 01 40 48.11 +38 38 38.2 X L76
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)