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
2001-10-09 18:49:07 C 22 14 20.20 +10 14 51.3 c 629
2001-10-09 18:50:09 C 22 14 19.26 +10 14 36.3 o 629
2001-10-09 18:50:51 C 22 14 18.62 +10 14 25.8 o 629
2001-10-09 18:52:07 C 22 14 17.52 +10 14 07.9 o 629
2001-10-09 18:52:35 C 22 14 17.12 +10 14 01.4 o 629
2001-10-10 10:17:03 C 22 01 04.93 +06 27 39.4 300
2001-10-10 10:20:41 C 22 01 01.63 +06 26 44.1 300
2001-10-10 10:24:18 C 22 00 58.40 +06 25 50.6 300
2001-10-10 10:27:55 C 22 00 55.10 +06 24 55.8 300
2001-10-10 19:52:37 C 21 52 36.57 +03 59 54.1 d 151
2001-10-10 19:55:01 C 21 52 34.39 +03 59 17.4 d 151
2001-10-10 19:56:10 C 21 52 33.29 +03 58 59.4 d 151
2001-10-10 19:57:13 C 21 52 32.37 +03 58 43.4 d 151
2001-10-10 19:58:38 C 21 52 31.08 +03 58 21.0 d 151
2001-10-10 20:01:19 C 21 52 28.62 +03 57 39.4 d 151
2001-10-11 19:04:45 C 21 31 47.22 -02 08 58.5 c 587
2001-10-11 19:06:49 C 21 31 45.26 -02 09 32.6 c 587
2001-10-11 19:08:49 C 21 31 43.38 -02 10 04.7 c 587
2001-10-11 19:10:44 C 21 31 41.57 -02 10 35.6 c 587
2001-10-12 01:42:29 C 21 25 43.27 -03 55 39.2 18.1 i 866
2001-10-12 01:51:29 C 21 25 34.75 -03 58 05.5 17.8 i 866
2001-10-12 02:07:11 C 21 25 21.92 -04 02 34.9 i 726
2001-10-12 02:12:12 C 21 25 17.24 -04 03 55.9 i 726
2001-10-12 02:17:12 C 21 25 12.52 -04 05 16.0 i 726
2001-10-12 02:21:57 C 21 25 08.07 -04 06 33.0 i 726
2001-10-12 02:26:57 C 21 25 03.33 -04 07 53.8 i 726
2001-10-12 02:31:56 C 21 24 58.61 -04 09 14.5 i 726
2001-10-12 02:35:30 C 21 24 55.29 -04 10 11.7 i 726
2001-10-12 02:37:59 C 21 24 52.94 -04 10 52.1 i 726
2001-10-12 17:10:46 C 21 11 36.43 -08 04 22.2 c 118
2001-10-12 17:12:08 C 21 11 35.15 -08 04 43.6 c 118
2001-10-12 17:14:02 C 21 11 33.37 -08 05 13.2 c 118
2001-10-12 19:49:29 C 21 09 06.69 -08 46 14.7 c 157
2001-10-12 19:52:50 C 21 09 03.61 -08 47 05.7 c 157
2001-10-13 02:08:21 C 21 03 22.61 -10 25 30.1 c 699
2001-10-13 02:26:16 C 21 03 05.55 -10 30 10.5 c 699
2001-10-13 02:44:10 C 21 02 48.58 -10 34 50.6 c 699
2001-10-13 03:02:07 C 21 02 31.50 -10 39 31.1 c 699
2001-10-13 18:37:08 C 20 48 16.34 -14 37 42.8 c 215
2001-10-13 18:38:45 C 20 48 14.80 -14 38 06.8 c 215
2001-10-13 18:39:48 C 20 48 13.81 -14 38 22.5 c 215
2001-10-13 18:41:24 C 20 48 12.31 -14 38 47.1 c 215
2001-10-14 16:58:52 C 20 28 07.75 -19 54 56.3 c 118
2001-10-14 17:01:44 C 20 28 05.07 -19 55 36.0 c 118
2001-10-14 17:03:02 C 20 28 03.86 -19 55 53.1 c 118
2001-10-15 02:02:14 C 20 20 05.25 -21 53 25.4 16.3 c 704
2001-10-15 02:25:32 C 20 19 43.97 -21 58 22.5 16.5 c 704
2001-10-15 02:48:52 C 20 19 22.68 -22 03 18.6 16.5 c 704
2001-10-15 03:12:50 C 20 19 00.85 -22 08 21.7 16.6 c 704
2001-10-15 03:35:28 C 20 18 40.29 -22 13 06.2 16.9 c 704
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)