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
2018-10-06 08:28:33 C 02 54 08.67 -26 20 16.5 V 703
2018-10-06 08:36:12 C 02 54 05.59 -26 19 09.2 V 703
2018-10-06 08:43:53 C 02 54 02.64 -26 18 03.6 V 703
2018-10-06 08:51:32 C 02 53 59.39 -26 16 55.6 V 703
2018-10-10 07:10:00 C 01 55 04.39 +02 42 32.3 V 703
2018-10-10 07:17:41 C 01 54 55.32 +02 46 53.8 V 703
2018-10-10 07:25:21 C 01 54 46.15 +02 51 18.1 V 703
2018-10-10 07:33:01 C 01 54 37.01 +02 55 41.8 V 703
2018-10-10 10:32:29 C 01 50 58.57 +04 40 41.3 V I52
2018-10-10 10:32:40 C 01 50 58.36 +04 40 47.7 V I52
2018-10-10 10:32:51 C 01 50 58.12 +04 40 54.3 V I52
2018-10-10 10:33:03 C 01 50 57.90 +04 41 00.9 V I52
2018-10-10 11:00:48 C 01 50 41.528 +04 59 08.49 V F52
2018-10-10 11:18:42 C 01 50 18.754 +05 09 55.18 V F52
2018-10-10 11:36:37 C 01 49 55.854 +05 20 45.22 V F52
2018-10-10 11:54:34 C 01 49 32.898 +05 31 36.75 V F52
2018-10-10 18:29:31 C 01 41 56.33 +09 37 10.7 V G34
2018-10-10 18:32:54 C 01 41 51.99 +09 39 22.0 V G34
2018-10-10 18:34:33 C 01 41 49.71 +09 40 29.3 V G34
2018-10-10 19:13:59 C 01 40 59.01 +10 06 34.2 q A17
2018-10-10 19:18:45 C 01 40 52.70 +10 09 44.1 q A17
2018-10-10 19:24:28 C 01 40 45.04 +10 13 31.7 q A17
2018-10-10 19:29:44 C 01 40 38.78 +10 17 25.5 V K51
2018-10-10 19:30:05 C 01 40 37.59 +10 17 15.8 q A17
2018-10-10 19:30:57 C 01 40 37.14 +10 18 14.4 V K51
2018-10-10 19:32:11 C 01 40 35.47 +10 19 03.3 V K51
2018-10-10 19:33:17 C 01 40 34.01 +10 19 47.6 V K51
2018-10-10 19:34:29 C 01 40 29.53 +10 20 40.8 t L04
2018-10-10 19:39:33 C 01 40 22.62 +10 24 03.4 t L04
2018-10-10 19:46:03 C 01 40 13.73 +10 28 23.3 t L04
2018-10-10 21:35:42 C 01 37 43.35 +11 42 10.5 V 595
2018-10-10 21:39:55 C 01 37 37.34 +11 45 01.8 V 595
2018-10-10 21:44:07 C 01 37 31.32 +11 47 53.1 V 595
2018-10-10 21:44:53 C 01 37 35.46 +11 48 30.5 U 958
2018-10-10 21:48:34 C 01 37 18.39 +11 50 30.1 q 585
2018-10-10 21:48:57 C 01 37 17.85 +11 50 46.0 q 585
2018-10-10 21:49:23 C 01 37 17.24 +11 51 03.7 q 585
2018-10-10 21:50:15 C 01 37 15.96 +11 51 39.1 q 585
2018-10-10 21:51:08 C 01 37 14.71 +11 52 14.4 q 585
2018-10-10 21:52:00 C 01 37 13.46 +11 52 50.5 q 585
2018-10-10 21:52:52 C 01 37 12.20 +11 53 26.1 q 585
2018-10-10 21:53:42 C 01 37 22.90 +11 54 31.3 U 958
2018-10-10 21:53:53 C 01 37 10.76 +11 54 06.8 q 585
2018-10-10 21:54:45 C 01 37 09.51 +11 54 42.4 q 585
2018-10-10 21:55:49 C 01 37 07.96 +11 55 26.2 q 585
2018-10-10 21:58:07 C 01 37 16.55 +11 57 31.6 U 958
2018-10-10 22:41:31 C 01 36 05.55 +12 26 50.2 o K88
2018-10-10 22:46:17 C 01 35 58.58 +12 30 05.9 o K88
2018-10-10 22:51:04 C 01 35 51.58 +12 33 22.0 o K88
2018-10-10 23:29:11 C 01 34 56.95 +13 00 23.0 q L28
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)