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
2021-09-28 05:12:46 C 22 08 37.27 +26 52 27.4 V 703
2021-09-28 05:20:19 C 22 08 35.13 +26 51 56.4 V 703
2021-09-28 08:13:50 C 22 07 49.08 +26 40 10.4 V T08
2021-09-28 08:36:56 C 22 07 42.62 +26 38 34.3 V T08
2021-09-28 08:39:36 C 22 07 41.89 +26 38 23.2 V T08
2021-09-28 08:50:43 C 22 07 38.80 +26 37 36.9 V T08
2021-09-28 08:52:03 C 22 07 38.43 +26 37 31.5 V T08
2021-09-28 08:55:25 C 22 07 37.49 +26 37 17.5 V T08
2021-09-28 09:11:33 C 22 07 32.98 +26 36 10.2 V T08
2021-09-29 05:41:42 C 22 02 10.477 +25 09 22.36 U F52
2021-09-29 05:59:59 C 22 02 05.460 +25 08 04.23 U F52
2021-09-29 06:18:15 C 22 02 00.437 +25 06 45.98 U F52
2021-09-30 08:43:44 C 21 55 04.33 +23 10 00.6 V T05
2021-09-30 08:48:21 C 21 55 03.08 +23 09 39.6 V T05
2021-09-30 09:11:09 C 21 54 56.87 +23 07 55.8 V T05
2021-09-30 21:10:52 C 21 51 51.83 +22 12 51.1 V A16
2021-09-30 21:15:04 C 21 51 50.70 +22 12 31.7 V A16
2021-09-30 21:17:46 C 21 51 49.85 +22 12 25.8 Z L74
2021-09-30 21:20:41 C 21 51 49.04 +22 12 11.3 Z L74
2021-09-30 21:22:53 C 21 51 48.44 +22 12 01.9 Z L74
2021-09-30 21:29:52 C 21 51 46.78 +22 11 23.5 V A16
2021-09-30 21:42:02 C 21 51 43.56 +22 10 27.5 V A16
2021-10-02 05:48:28 C 21 43 33.75 +19 39 27.3 V V00
2021-10-02 05:56:17 C 21 43 31.70 +19 38 49.6 V V00
2021-10-02 06:11:53 C 21 43 27.62 +19 37 34.5 V V00
2021-10-02 18:52:32 C 21 40 19.72 +18 35 58.1 V K74
2021-10-02 18:53:36 C 21 40 19.45 +18 35 52.9 V K74
2021-10-02 18:57:03 C 21 40 18.56 +18 35 36.4 V K74
2021-10-02 20:40:50 C 21 39 51.29 +18 27 10.6 V L18
2021-10-02 20:42:32 C 21 39 50.86 +18 27 01.9 V L18
2021-10-02 20:44:14 C 21 39 50.39 +18 26 53.0 V L18
2021-10-02 20:45:56 C 21 39 49.94 +18 26 44.7 V L18
2021-10-02 20:47:38 C 21 39 49.53 +18 26 36.3 V L18
2021-10-02 21:40:00 C 21 39 36.58 +18 22 24.6 V L63
2021-10-02 21:52:20 C 21 39 33.42 +18 21 24.0 V L63
2021-10-02 22:04:40 C 21 39 30.24 +18 20 23.7 V L63
2021-10-03 03:22:57 C 21 38 13.38 +17 54 32.4 V 703
2021-10-03 03:31:10 C 21 38 11.35 +17 53 52.4 V 703
2021-10-03 03:39:23 C 21 38 09.09 +17 53 11.3 V 703
2021-10-03 03:47:35 C 21 38 06.98 +17 52 30.7 V 703
2021-10-03 03:51:25 C 21 38 06.06 +17 52 12.4 V V00
2021-10-03 03:58:25 C 21 38 04.25 +17 51 38.0 V V00
2021-10-03 04:05:24 C 21 38 02.41 +17 51 04.1 V V00
2021-10-03 04:12:25 C 21 38 00.63 +17 50 29.2 V V00
2021-10-04 07:53:44 C 21 31 16.20 +15 32 42.4 V T05
2021-10-04 08:01:42 C 21 31 14.20 +15 32 02.0 V T05
2021-10-04 08:21:35 C 21 31 09.17 +15 30 21.6 V T05
2021-10-06 06:58:18 C 21 20 16.14 +11 32 33.4 V T08
2021-10-06 07:24:34 C 21 20 09.81 +11 30 18.0 V T08
2021-10-06 07:29:13 C 21 20 08.69 +11 29 54.1 V T08
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)