IAA RAS IAA Minor Planet Database

2018 TR4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1598652000
Semi-major axis (a)1.0812229000 AU
Inclination (i)19.68681000°
Long. of Asc. Node (Ω)17.32717000°
Arg. of Perihelion (ω)77.13187000°
Mean Anomaly (M)58.01334000°
Mean Motion (n)0.8766600900°/day
Perihelion dist (q)0.90837300 AU
Aphelion dist (Q)1.25407280 AU
Orbital Period1.12427580 yr
Physical Parameters
H (abs. magnitude)25.05
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.740″
Uncertainty6
Orbit TypeApollo
MOID0.016045 AU
Observations Used154
Radar Obs Used1
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2018-10-13
Observations (164)
Date Type RA Dec Mag Band Observatory
2018-10-12 03:54:21 V 00 45 54.87 +33 59 20.6 – V 247
2018-10-12 03:54:21 v 1 248.2384 +40.4490 – – 247
2018-10-12 04:12:00 V 00 45 15.07 +34 12 34.6 – V 247
2018-10-12 04:12:00 v 1 248.2384 +40.4490 – – 247
2018-10-12 04:18:11 C 00 45 01.18 +34 17 09.4 17.7 r 718
2018-10-12 04:20:30 C 00 44 55.91 +34 18 53.3 17.3 r 718
2018-10-12 04:22:49 C 00 44 50.73 +34 20 35.8 17.3 r 718
2018-10-12 04:25:07 C 00 44 45.45 +34 22 19.1 17.5 r 718
2018-10-12 04:27:26 C 00 44 40.20 +34 24 01.9 17.9 r 718
2018-10-12 04:29:45 C 00 44 34.96 +34 25 46.1 17.5 r 718
2018-10-12 06:19:42 C 00 40 03.80 +35 47 37.5 – u 850
2018-10-12 06:33:05 C 00 39 31.95 +35 57 16.0 – u 850
2018-10-12 06:56:15 C 00 38 36.73 +36 13 55.0 – u 850
2018-10-12 07:20:05 C 00 37 39.77 +36 30 57.2 – u 850
2018-10-12 07:31:14 C 00 37 13.13 +36 38 52.9 – u 850
2018-10-12 12:39:34 C 00 25 39.07 +40 17 31.1 – r P93
2018-10-12 12:40:24 C 00 25 36.92 +40 18 05.3 – r P93
2018-10-12 12:41:13 C 00 25 34.79 +40 18 40.1 – r P93
2018-10-12 12:43:42 C 00 25 28.34 +40 20 23.5 – r P93
2018-10-12 18:07:54 C 00 11 52.77 +43 53 38.6 17.7 V 246
2018-10-12 18:08:02 C 00 11 52.39 +43 53 44.2 – V 246
2018-10-12 18:08:09 C 00 11 52.03 +43 53 49.1 – V 246
2018-10-12 18:08:16 C 00 11 51.62 +43 53 55.0 – V 246
2018-10-12 18:08:24 C 00 11 51.29 +43 54 00.1 – V 246
2018-10-12 18:08:33 C 00 11 50.89 +43 54 05.0 – V 246
2018-10-12 18:08:40 C 00 11 50.55 +43 54 10.6 – V 246
2018-10-12 18:08:48 C 00 11 50.22 +43 54 15.1 – V 246
2018-10-12 18:08:57 C 00 11 49.86 +43 54 20.7 – V 246
2018-10-12 18:09:05 C 00 11 49.50 +43 54 26.1 – V 246
2018-10-12 18:22:45 C 00 11 13.51 +44 03 02.9 – q A17
2018-10-12 18:27:07 C 00 11 01.58 +44 05 54.7 – q A17
2018-10-12 18:30:31 C 00 10 52.32 +44 08 08.6 – q A17
2018-10-12 18:36:04 C 00 10 37.13 +44 11 46.0 – q A17
2018-10-12 18:53:10 C 00 09 47.80 +44 23 00.6 – V G34
2018-10-12 18:55:06 C 00 09 42.39 +44 24 16.7 – V G34
2018-10-12 18:59:16 C 00 09 30.94 +44 26 58.9 – V G34
2018-10-12 19:13:16 C 00 08 55.79 +44 36 25.4 – q K38
2018-10-12 19:18:54 C 00 08 40.03 +44 40 03.3 – q K38
2018-10-12 19:20:38 C 00 08 35.13 +44 41 31.2 – q 160
2018-10-12 19:22:15 C 00 08 30.62 +44 42 33.9 – q 160
2018-10-12 19:23:50 C 00 08 26.10 +44 43 36.0 – q 160
2018-10-12 19:24:30 C 00 08 24.26 +44 43 41.6 – q K38
2018-10-12 19:24:55 C 00 08 24.35 +44 44 03.9 – q C77
2018-10-12 19:25:23 C 00 08 21.76 +44 44 35.9 – q 160
2018-10-12 19:26:55 C 00 08 17.44 +44 45 35.0 – q 160
2018-10-12 19:28:28 C 00 08 13.09 +44 46 34.3 – q 160
2018-10-12 19:31:37 C 00 08 05.61 +44 48 23.2 – q C77
2018-10-12 19:31:56 C 00 08 00.17 +44 48 19.5 – V 246
2018-10-12 19:32:05 C 00 07 59.75 +44 48 24.3 – V 246
2018-10-12 19:32:13 C 00 07 59.39 +44 48 29.2 – V 246
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2018-10-12 03:07:00 -8677.5837 0.2 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)