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
2024-10-02 19:33:25 B 01 40 46.40 +38 38 25.2 X L76
2024-10-02 19:39:40 B 01 40 44.70 +38 38 12.3 X L76
2024-10-02 19:45:55 B 01 40 42.99 +38 37 59.3 X L76
2024-10-02 19:48:03 C 01 40 40.38 +38 37 45.4 q 168
2024-10-02 19:52:09 B 01 40 41.29 +38 37 46.4 X L76
2024-10-02 20:24:08 C 01 40 30.51 +38 36 27.6 q 168
2024-10-03 00:32:21 C 01 39 22.21 +38 27 23.6 V C40
2024-10-03 00:43:06 C 01 39 19.15 +38 26 57.8 V C40
2024-10-03 00:52:49 C 01 39 16.38 +38 26 34.4 V C40
2024-10-03 05:24:26 V 01 38 11.42 +38 15 42.2 V 270
2024-10-03 05:24:26 v 1 237.34929 +47.62043 270
2024-10-03 05:35:33 V 01 38 08.21 +38 15 17.6 V 270
2024-10-03 05:35:33 v 1 237.34929 +47.62043 270
2024-10-03 05:47:09 V 01 38 04.87 +38 14 50.9 V 270
2024-10-03 05:47:09 v 1 237.34929 +47.62043 270
2024-10-03 06:03:26 V 01 37 59.67 +38 14 01.8 V 270
2024-10-03 06:03:26 v 1 237.34929 +47.62043 270
2024-10-03 11:28:50 C 01 36 23.777 +38 01 37.63 V T05
2024-10-03 12:10:39 C 01 36 10.236 +37 59 47.94 V T05
2024-10-03 12:19:51 C 01 36 07.248 +37 59 23.39 V T05
2024-10-03 12:55:59 C 01 35 55.541 +37 57 45.86 V T05
2024-10-03 18:45:02 C 01 34 20.390 +37 40 38.17 Z C23
2024-10-03 18:45:38 C 01 34 20.210 +37 40 36.95 Z C23
2024-10-03 21:36:52 C 01 33 25.723 +37 32 54.10 V Z80
2024-10-03 21:39:53 C 01 33 24.737 +37 32 45.82 V Z80
2024-10-03 21:44:55 C 01 33 23.076 +37 32 31.81 V Z80
2024-10-03 23:51:05 C 01 32 36.40 +37 26 42.6 V C40
2024-10-04 00:03:15 C 01 32 32.21 +37 26 05.5 V C40
2024-10-04 00:15:23 C 01 32 28.03 +37 25 28.3 V C40
2024-10-04 01:23:43 C 01 32 07.908 +37 21 58.28 Z C23
2024-10-04 01:24:48 C 01 32 07.454 +37 21 54.11 Z C23
2024-10-04 03:09:29 V 01 31 43.05 +37 16 19.0 V 270
2024-10-04 03:09:29 v 1 242.98590 +33.20798 270
2024-10-04 03:16:14 V 01 31 40.26 +37 16 06.4 V 270
2024-10-04 03:16:14 v 1 242.98590 +33.20798 270
2024-10-04 03:20:24 V 01 31 38.86 +37 15 55.9 V 270
2024-10-04 03:20:24 v 1 242.98590 +33.20798 270
2024-10-04 03:25:44 V 01 31 36.98 +37 15 41.1 V 270
2024-10-04 03:25:44 v 1 242.98590 +33.20798 270
2024-10-04 07:11:55 C 01 30 15.700 +37 04 32.52 V 703
2024-10-04 07:16:12 C 01 30 14.047 +37 04 18.23 V 703
2024-10-04 07:20:31 C 01 30 12.427 +37 04 04.66 V 703
2024-10-04 07:24:56 C 01 30 10.771 +37 03 50.58 V 703
2024-10-04 11:01:05 C 01 28 54.682 +36 52 25.32 V T08
2024-10-04 11:05:46 V 01 28 46.04 +36 51 18.6 V 270
2024-10-04 11:05:46 v 1 262.25291 +30.53187 270
2024-10-04 11:13:22 V 01 28 43.20 +36 50 50.8 V 270
2024-10-04 11:13:22 v 1 262.25291 +30.53187 270
2024-10-04 11:18:56 V 01 28 41.17 +36 50 32.2 V 270
2024-10-04 11:18:56 v 1 262.25291 +30.53187 270
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)