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
2001-10-02 03:43:39 C 00 11 38.85 +35 30 30.0 c 642
2001-10-02 03:45:14 C 00 11 38.17 +35 30 24.2 c 642
2001-10-02 19:29:29 C 00 04 27.96 +34 27 18.6 c 185
2001-10-02 19:35:04 C 00 04 25.33 +34 26 55.3 c 185
2001-10-02 19:40:54 C 00 04 22.70 +34 26 33.1 c 185
2001-10-02 19:51:15 C 00 04 17.41 +34 25 47.9 c 185
2001-10-02 19:53:49 C 00 04 16.20 +34 25 37.0 c 185
2001-10-02 19:57:10 C 00 04 14.55 +34 25 22.8 c 185
2001-10-02 21:32:19 C 00 03 27.14 +34 18 39.1 c 118
2001-10-02 21:35:07 C 00 03 25.78 +34 18 27.1 c 118
2001-10-02 21:36:38 C 00 03 25.02 +34 18 20.4 c 118
2001-10-04 19:38:15 C 23 39 23.48 +30 16 10.2 c 127
2001-10-04 19:52:03 C 23 39 15.33 +30 14 44.5 c 127
2001-10-04 19:56:38 C 23 39 12.63 +30 14 16.4 c 127
2001-10-04 21:11:25 C 23 38 28.12 +30 06 30.2 c 185
2001-10-04 21:13:59 C 23 38 26.59 +30 06 14.2 c 185
2001-10-04 21:17:00 C 23 38 24.80 +30 05 55.3 c 185
2001-10-04 21:20:00 C 23 38 23.02 +30 05 35.9 c 185
2001-10-04 21:22:59 C 23 38 21.20 +30 05 17.1 c 185
2001-10-04 21:25:30 C 23 38 19.68 +30 05 01.2 c 185
2001-10-04 23:54:53 C 23 36 49.10 +29 48 51.6 c 118
2001-10-04 23:55:37 C 23 36 48.66 +29 48 46.8 c 118
2001-10-04 23:58:24 C 23 36 46.98 +29 48 28.4 c 118
2001-10-05 20:45:42 C 23 24 13.76 +27 21 18.4 c 127
2001-10-05 20:50:21 C 23 24 10.77 +27 20 43.4 c 127
2001-10-06 04:54:13 C 23 18 58.15 +26 17 08.0 d 739
2001-10-06 04:55:25 C 23 18 57.20 +26 16 57.1 d 739
2001-10-06 18:32:02 C 23 09 55.91 +24 19 13.0 d 151
2001-10-06 18:32:36 C 23 09 55.53 +24 19 07.6 d 151
2001-10-06 18:35:18 C 23 09 53.71 +24 18 44.2 d 151
2001-10-06 18:37:04 C 23 09 52.40 +24 18 28.2 d 151
2001-10-06 18:39:14 C 23 09 50.86 +24 18 08.2 d 151
2001-10-06 18:43:19 C 23 09 48.02 +24 17 31.7 d 151
2001-10-08 17:40:03 C 22 35 01.28 +15 51 48.0 d 557
2001-10-08 18:07:42 C 22 34 38.71 +15 46 02.9 d 557
2001-10-08 18:23:04 C 22 34 26.15 +15 42 50.8 d 557
2001-10-08 18:27:19 C 22 34 22.50 +15 42 00.6 c 118
2001-10-08 18:31:58 C 22 34 18.67 +15 41 02.3 c 118
2001-10-08 18:35:47 C 22 34 15.55 +15 40 14.5 c 118
2001-10-08 18:38:04 C 22 34 13.88 +15 39 43.1 d 557
2001-10-08 18:53:04 C 22 34 01.56 +15 36 34.7 d 557
2001-10-08 19:08:11 C 22 33 49.15 +15 33 24.8 d 557
2001-10-08 19:10:37 C 22 33 47.74 +15 33 03.7 610
2001-10-08 19:12:08 C 22 33 46.48 +15 32 44.6 610
2001-10-08 19:14:07 C 22 33 44.84 +15 32 19.7 610
2001-10-08 19:19:07 C 22 33 40.70 +15 31 16.9 610
2001-10-08 19:20:11 C 22 33 39.82 +15 31 03.5 610
2001-10-08 19:22:07 C 22 33 38.24 +15 30 39.4 610
2001-10-08 19:23:25 C 22 33 36.63 +15 30 12.9 d 557
2001-10-08 19:24:06 C 22 33 36.58 +15 30 14.3 610
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)