1620 Geographos (1951 RA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3355121545 ± 2.00e+00
Semi-major axis (a)1.2457769668 AU ± 3.00e+00
Inclination (i)13.33577542° ± 4.00e+00
Long. of Asc. Node (Ω)337.14082621° ± 5.00e+00
Arg. of Perihelion (ω)277.01835526° ± 6.00e+00
Mean Anomaly (M)212.92032873° ± 2.36e-05
Mean Motion (n)0.7088458984°/day ± 2.56e+00
Perihelion dist (q)0.82780365 AU ± 3.19e+00
Aphelion dist (Q)1.66375028 AU ± 4.72e+00
Orbital Period1.39046623 yr ± 5.02e+00
NGA Modelr2
A23.55475120e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.26
G (slope)0.15
Alternative Designations

1983 CY3

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.028806 AU
Observations Used9056
Radar Obs Used5
Gaia Obs Used104
Oppositions19
Arc Total1951-2017
First Observation Used1951-08-31
Last Observation Used2026-04-08
Observations (11927)
Date Type RA Dec Mag Band Observatory
2026-03-12 18:10:28 C 06 24 56.42 +28 38 00.3 X C40
2026-03-12 18:12:37 C 06 24 56.41 +28 37 57.9 X C40
2026-03-12 18:14:47 C 06 24 56.45 +28 37 55.8 X C40
2026-03-12 18:16:56 C 06 24 56.44 +28 37 53.8 X C40
2026-03-12 18:19:04 C 06 24 56.44 +28 37 51.2 X C40
2026-03-12 18:21:13 C 06 24 56.44 +28 37 48.9 X C40
2026-03-12 18:23:22 C 06 24 56.46 +28 37 46.8 X C40
2026-03-12 19:07:40 B 06 24 56.724 +28 37 00.80 X S42
2026-03-12 19:10:46 B 06 24 56.729 +28 36 57.64 X S42
2026-03-12 19:13:53 B 06 24 56.738 +28 36 54.29 X S42
2026-03-12 19:16:59 B 06 24 56.758 +28 36 51.01 X S42
2026-03-12 20:31:52 B 06 24 57.174 +28 35 31.07 W G34
2026-03-12 20:39:04 B 06 24 57.184 +28 35 23.45 W G34
2026-03-12 20:46:02 B 06 24 57.247 +28 35 16.04 W G34
2026-03-12 21:16:06 B 06 24 57.619 +28 34 52.25 X J51
2026-03-12 21:18:22 B 06 24 57.588 +28 34 49.40 X J51
2026-03-12 21:50:27 B 06 24 57.667 +28 34 15.67 X J51
2026-03-13 18:05:11 C 06 25 06.55 +28 13 08.4 X C40
2026-03-13 18:07:06 C 06 25 06.54 +28 13 06.4 X C40
2026-03-13 18:09:03 C 06 25 06.57 +28 13 04.6 X C40
2026-03-13 18:10:59 C 06 25 06.58 +28 13 03.0 X C40
2026-03-13 18:14:31 C 06 25 06.61 +28 12 58.2 X C40
2026-03-13 18:16:15 C 06 25 06.60 +28 12 56.5 X C40
2026-03-13 18:17:58 C 06 25 06.61 +28 12 55.0 X C40
2026-03-13 18:19:41 C 06 25 06.61 +28 12 53.3 X C40
2026-03-13 18:21:23 C 06 25 06.62 +28 12 51.5 X C40
2026-03-13 18:23:06 C 06 25 06.62 +28 12 49.6 X C40
2026-03-13 18:24:50 C 06 25 06.63 +28 12 47.9 X C40
2026-03-13 20:43:58 B 06 25 08.083 +28 10 28.99 X J51
2026-03-13 21:12:29 B 06 25 08.196 +28 09 59.00 X J51
2026-03-13 21:40:56 B 06 25 08.328 +28 09 29.09 X J51
2026-03-14 18:10:51 C 06 25 20.54 +27 48 12.4 X C40
2026-03-14 18:13:00 C 06 25 20.55 +27 48 10.0 X C40
2026-03-14 18:15:08 C 06 25 20.57 +27 48 07.8 X C40
2026-03-14 18:17:17 C 06 25 20.58 +27 48 05.6 X C40
2026-03-14 18:19:25 C 06 25 20.60 +27 48 03.3 X C40
2026-03-14 18:21:34 C 06 25 20.62 +27 48 01.0 X C40
2026-03-14 18:23:43 C 06 25 20.63 +27 47 58.8 X C40
2026-03-14 18:25:51 C 06 25 20.64 +27 47 56.6 X C40
2026-03-14 18:27:59 C 06 25 20.66 +27 47 54.4 X C40
2026-03-14 18:30:08 C 06 25 20.68 +27 47 52.1 X C40
2026-03-14 18:32:17 C 06 25 20.70 +27 47 49.8 X C40
2026-03-14 18:34:25 C 06 25 20.71 +27 47 47.5 X C40
2026-03-14 19:41:17 C 06 25 21.732 +27 46 37.67 Z C23
2026-03-14 20:34:30 C 06 25 22.157 +27 45 42.41 Z C23
2026-03-14 23:12:23 C 06 25 23.602 +27 42 57.28 Z C23
2026-03-17 17:23:37 C 06 26 23.54 +26 35 14.2 X C40
2026-03-17 17:25:46 C 06 26 23.54 +26 35 11.4 X C40
2026-03-17 17:27:55 C 06 26 23.56 +26 35 09.3 X C40
2026-03-17 17:30:03 C 06 26 23.57 +26 35 06.5 X C40
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1983-02-27 05:00:00 161795 5 Hz 2380 -1 -1
1983-02-27.208333 16179500 500 Hz 2380 251 251
1983-02-28 05:04:00 142007628 30 us 2380 -1 -1
1983-02-28.211111 14200762800 30000 us 2380 251 251
1994-08-28 07:10:00 38936537.06 1.76 us 8510 -14 -14
1994-08-28 07:10:00 -364880.593 0.9 Hz 8510 -14 -14
1994-08-28.298611 3893653706 1760 us 8510 253 253
1994-08-29 04:40:00 42596456.4 1.13 us 8510 -14 -14
1994-08-29 04:40:00 -427851.027 0.2 Hz 8510 -14 -14
1994-08-29.194444 4259645640 1130 us 8510 253 253
1994-09-02 07:20:00 -615553.2 0.5 Hz 8510 -14 -14
1994-09-02.305556 -61555320 50 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)