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
2018-10-10 23:36:06 C 01 34 47.46 +13 04 36.7 V L01
2018-10-10 23:37:48 C 01 34 44.93 +13 05 47.1 V L01
2018-10-10 23:39:31 C 01 34 42.39 +13 06 57.6 V L01
2018-10-10 23:41:13 C 01 34 39.85 +13 08 08.1 V L01
2018-10-10 23:57:59 C 01 34 13.88 +13 20 14.5 q L28
2018-10-11 00:08:49 C 01 33 57.53 +13 27 42.8 q L28
2018-10-11 00:11:35 C 01 33 54.16 +13 28 17.8 S K80
2018-10-11 00:17:24 C 01 33 44.60 +13 33 40.2 q L28
2018-10-11 00:30:08 C 01 33 26.59 +13 41 08.5 S K80
2018-10-11 00:38:43 C 01 33 13.81 +13 47 05.9 S K80
2018-10-11 02:10:33 C 01 30 56.12 +14 51 06.6 S K80
2018-10-11 02:45:17 C 01 30 03.77 +15 15 28.7 S K80
2018-10-11 03:46:28 C 01 29 14.11 +16 01 09.7 V I52
2018-10-11 03:46:40 C 01 29 13.86 +16 01 17.1 V I52
2018-10-11 03:46:51 C 01 29 13.56 +16 01 25.2 V I52
2018-10-11 03:47:01 C 01 29 13.29 +16 01 33.1 V I52
2018-10-11 04:53:55 C 01 27 25.99 +16 49 57.1 V H06
2018-10-11 04:57:22 C 01 27 20.47 +16 52 28.1 V H06
2018-10-11 05:00:18 C 01 27 15.71 +16 54 35.1 V H06
2018-10-11 17:35:53 C 01 06 27.07 +26 12 50.6 t L04
2018-10-11 17:40:06 C 01 06 19.19 +26 16 04.1 t L04
2018-10-11 17:44:17 C 01 06 11.31 +26 19 16.9 t L04
2018-10-11 18:38:30 C 01 04 31.48 +27 00 09.1 V K30
2018-10-11 18:44:27 C 01 04 20.12 +27 04 43.3 V K30
2018-10-11 18:50:52 C 01 04 07.87 +27 09 39.2 V K30
2018-10-11 19:32:10 C 01 02 44.47 +27 41 01.1 S C43
2018-10-11 19:40:55 C 01 02 27.30 +27 47 43.5 S C43
2018-10-11 19:45:22 C 01 02 18.52 +27 51 07.1 S C43
2018-10-11 20:14:38 C 01 01 25.14 +28 12 58.9 V J95
2018-10-11 20:16:31 C 01 01 21.40 +28 14 25.5 V J95
2018-10-11 20:18:21 C 01 01 17.80 +28 15 49.4 V J95
2018-10-11 21:35:23 C 00 58 42.61 +29 14 38.4 V Z80
2018-10-11 21:38:29 C 00 58 36.39 +29 16 59.9 V Z80
2018-10-11 21:42:46 C 00 58 27.58 +29 20 15.2 V Z80
2018-10-11 21:45:51 C 00 58 21.15 +29 22 36.6 V Z80
2018-10-12 01:30:36 C 00 51 02.61 +32 12 48.3 q W34
2018-10-12 01:44:06 C 00 50 33.28 +32 23 04.7 q W34
2018-10-12 01:59:26 C 00 49 59.89 +32 34 41.2 q W34
2018-10-12 02:23:05 C 00 49 08.96 +32 51 45.4 u H21
2018-10-12 02:24:34 C 00 49 05.71 +32 52 52.3 u H21
2018-10-12 02:26:00 C 00 49 02.58 +32 53 57.2 u H21
2018-10-12 02:30:16 C 00 48 53.16 +32 57 10.3 u H21
2018-10-12 02:31:41 C 00 48 50.03 +32 58 14.5 u H21
2018-10-12 02:33:06 C 00 48 46.90 +32 59 18.8 u H21
2018-10-12 02:34:31 C 00 48 43.75 +33 00 23.2 u H21
2018-10-12 02:35:56 C 00 48 40.62 +33 01 27.5 u H21
2018-10-12 02:37:22 C 00 48 37.47 +33 02 31.7 u H21
2018-10-12 02:38:47 C 00 48 34.33 +33 03 35.9 u H21
2018-10-12 02:40:12 C 00 48 31.19 +33 04 40.2 u H21
2018-10-12 02:41:37 C 00 48 28.05 +33 05 44.5 u H21
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)