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
2001-02-16 19:32:18 C 07 29 50.36 +37 31 15.4 113
2001-02-16 19:36:18 C 07 29 49.79 +37 31 11.5 113
2001-02-16 19:44:17 C 07 29 48.67 +37 31 03.6 113
2001-02-17 00:33:00 C 07 29 08.23 +37 26 15.3 205
2001-02-17 00:42:59 C 07 29 06.82 +37 26 05.2 205
2001-02-17 00:51:00 C 07 29 05.75 +37 25 56.8 205
2001-02-17 00:58:59 C 07 29 04.64 +37 25 48.5 205
2001-02-19 19:05:05 C 07 20 36.31 +36 17 04.4 151
2001-02-19 19:07:51 C 07 20 35.95 +36 17 01.5 151
2001-02-19 19:09:41 C 07 20 35.71 +36 16 59.5 151
2001-02-19 19:11:47 C 07 20 35.45 +36 16 57.2 151
2001-02-20 22:06:30 C 07 17 21.16 +35 47 24.0 169
2001-02-20 22:11:06 C 07 17 20.65 +35 47 18.6 169
2001-02-20 22:16:19 C 07 17 19.96 +35 47 13.0 169
2001-02-26 01:07:22 C 07 04 30.08 +33 23 29.0 726
2001-02-26 01:12:23 C 07 04 29.58 +33 23 23.0 726
2001-02-26 01:17:23 C 07 04 29.08 +33 23 16.8 726
2001-02-26 01:22:22 C 07 04 28.62 +33 23 11.4 726
2001-02-26 01:27:22 C 07 04 28.13 +33 23 04.4 726
2001-02-26 01:32:23 C 07 04 27.65 +33 22 58.7 726
2001-02-26 18:28:48 C 07 02 55.88 +33 02 17.5 151
2001-02-26 18:32:04 C 07 02 55.61 +33 02 13.2 151
2001-02-26 18:34:23 C 07 02 55.37 +33 02 10.9 151
2001-02-26 18:37:02 C 07 02 55.10 +33 02 07.6 151
2001-02-26 18:38:30 C 07 02 54.97 +33 02 05.9 151
2001-03-01 19:32:44 C 06 56 59.25 +31 31 32.8 046
2001-03-01 19:38:28 C 06 56 58.79 +31 31 25.6 046
2001-03-01 19:40:27 C 06 56 58.64 +31 31 23.2 046
2001-03-02 02:43:44 C 06 56 27.93 +31 22 36.8 16.4 c 704
2001-03-02 03:02:24 C 06 56 26.54 +31 22 13.5 16.9 c 704
2001-03-02 03:21:03 C 06 56 25.02 +31 21 49.7 15.5 c 704
2001-03-02 03:39:43 C 06 56 23.55 +31 21 26.1 16.0 c 704
2001-03-03 01:52:07 C 06 54 50.05 +30 53 23.1 739
2001-03-03 02:03:51 C 06 54 49.25 +30 53 08.4 739
2001-03-03 02:07:37 C 06 54 49.03 +30 53 03.7 739
2001-03-03 04:09:31 C 06 54 40.25 +30 50 32.1 16.2 c 704
2001-03-03 04:28:08 C 06 54 38.91 +30 50 07.8 17.1 c 704
2001-03-03 04:46:43 C 06 54 37.53 +30 49 44.2 16.5 c 704
2001-03-03 05:05:15 C 06 54 36.27 +30 49 21.5 16.1 c 704
2001-03-04 00:35:46 C 06 53 18.85 +30 24 36.2 14.6 939
2001-03-04 00:45:45 C 06 53 18.33 +30 24 22.6 14.7 939
2001-03-04 00:50:45 C 06 53 18.14 +30 24 16.8 14.7 939
2001-03-06 20:32:26 C 06 49 23.73 +28 58 02.2 113
2001-03-06 20:33:38 C 06 49 23.66 +28 58 00.7 113
2001-03-06 20:34:52 C 06 49 23.65 +28 57 58.2 113
2001-03-06 20:36:04 C 06 49 23.57 +28 57 57.3 113
2001-03-06 20:37:18 C 06 49 23.46 +28 57 55.9 113
2001-03-07 14:05:14 C 06 48 30.08 +28 35 40.4 347
2001-03-07 14:10:56 C 06 48 29.72 +28 35 33.4 347
2001-03-07 14:16:02 C 06 48 29.48 +28 35 26.6 347
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)