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
2024-10-11 20:12:54 B 22 22 20.917 -13 01 55.98 Z M49
2024-10-11 20:20:01 B 22 22 02.516 -13 07 12.35 Z M49
2024-10-11 20:27:08 B 22 21 44.102 -13 12 28.88 Z M49
2024-10-11 21:29:33 C 22 18 58.56 -14 04 41.0 V C40
2024-10-11 21:31:38 C 22 18 53.26 -14 06 13.2 V C40
2024-10-11 21:33:39 C 22 18 48.06 -14 07 42.2 V C40
2024-10-11 21:35:39 C 22 18 42.95 -14 09 10.6 V C40
2024-10-11 21:37:38 C 22 18 37.86 -14 10 38.7 V C40
2024-10-11 21:39:46 C 22 18 32.41 -14 12 12.6 V C40
2024-10-11 22:40:48 B 22 16 03.51 -14 58 00.0 Z M61
2024-10-11 22:42:56 B 22 15 57.98 -14 59 34.5 Z M61
2024-10-11 22:45:03 B 22 15 52.49 -15 01 08.5 Z M61
2024-10-13 09:43:46 V 20 38 05.57 -37 18 06.5 V 270
2024-10-13 09:43:46 v 1 151.66014 -32.96844 270
2024-10-13 10:01:05 V 20 37 13.45 -37 26 13.1 V 270
2024-10-13 10:01:05 v 1 151.66014 -32.96844 270
2024-10-13 10:10:25 V 20 36 45.41 -37 30 34.6 V 270
2024-10-13 10:10:25 v 1 151.66014 -32.96844 270
2024-10-13 10:15:59 V 20 36 28.87 -37 33 09.6 V 270
2024-10-13 10:15:59 v 1 151.66014 -32.96844 270
2024-10-14 18:23:23 C 19 09 41.446 -47 33 38.09 V M22
2024-10-14 18:28:00 C 19 09 30.070 -47 34 26.22 V M22
2024-10-14 18:36:01 C 19 09 10.325 -47 35 50.21 V M22
2024-10-14 18:50:46 C 19 08 34.044 -47 38 23.71 V M22
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)