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
2000-12-31 22:06:33 C 09 46 22.36 +38 24 35.5 610
2000-12-31 22:11:33 C 09 46 22.19 +38 24 37.6 610
2001-01-04 14:03:14 C 09 42 45.22 +39 00 35.8 355
2001-01-04 14:09:00 C 09 42 44.90 +39 00 38.9 355
2001-01-04 14:11:48 C 09 42 44.78 +39 00 39.9 355
2001-01-04 14:14:36 C 09 42 44.64 +39 00 41.1 355
2001-01-07 09:20:28 C 09 39 02.72 +39 28 38.3 c 704
2001-01-07 09:42:27 C 09 39 01.27 +39 28 47.7 c 704
2001-01-07 10:04:28 C 09 38 59.81 +39 28 56.9 c 704
2001-01-07 10:26:43 C 09 38 58.34 +39 29 06.1 c 704
2001-01-07 10:51:01 C 09 38 56.71 +39 29 16.3 c 704
2001-01-13 21:06:46 C 09 27 08.60 +40 30 51.2 127
2001-01-13 21:12:33 C 09 27 08.04 +40 30 53.5 127
2001-01-13 21:19:22 C 09 27 07.40 +40 30 56.3 127
2001-01-13 22:47:03 C 09 26 59.02 +40 31 31.6 113
2001-01-13 22:49:03 C 09 26 58.83 +40 31 32.5 113
2001-01-13 22:51:04 C 09 26 58.62 +40 31 33.3 113
2001-01-13 22:53:04 C 09 26 58.42 +40 31 34.1 113
2001-01-13 22:55:04 C 09 26 58.22 +40 31 34.7 113
2001-01-14 23:37:00 C 09 24 37.07 +40 40 37.2 127
2001-01-14 23:45:04 C 09 24 36.23 +40 40 40.2 127
2001-01-14 23:51:01 C 09 24 35.63 +40 40 42.6 127
2001-01-15 23:30:21 C 09 22 13.35 +40 49 00.9 127
2001-01-15 23:38:09 C 09 22 12.52 +40 49 03.5 127
2001-01-15 23:51:39 C 09 22 11.08 +40 49 08.4 127
2001-01-15 23:57:50 C 09 22 10.41 +40 49 10.5 127
2001-01-16 22:06:03 C 09 19 51.12 +40 56 33.6 127
2001-01-16 22:13:16 C 09 19 50.30 +40 56 36.3 127
2001-01-17 08:06:06 C 09 18 45.52 +40 59 54.0 15.4 c 704
2001-01-17 08:11:56 C 09 18 44.85 +40 59 56.2 15.7 c 704
2001-01-17 08:28:23 C 09 18 42.95 +41 00 01.5 16.5 c 704
2001-01-17 08:34:45 C 09 18 42.23 +41 00 03.4 16.6 c 704
2001-01-17 08:52:16 C 09 18 40.24 +41 00 08.7 15.8 c 704
2001-01-17 08:57:30 C 09 18 39.62 +41 00 10.7 15.7 c 704
2001-01-17 09:15:14 C 09 18 37.58 +41 00 16.0 15.3 c 704
2001-01-17 09:21:38 C 09 18 36.83 +41 00 18.0 15.5 c 704
2001-01-17 09:37:47 C 09 18 34.98 +41 00 23.3 15.2 c 704
2001-01-17 09:44:02 C 09 18 34.24 +41 00 25.0 15.6 c 704
2001-01-22 03:23:03 C 09 04 48.68 +41 29 50.9 726
2001-01-22 03:28:03 C 09 04 47.87 +41 29 53.3 726
2001-01-22 03:33:02 C 09 04 47.38 +41 29 53.0 726
2001-01-22 03:38:02 C 09 04 46.64 +41 29 54.4 726
2001-01-22 03:43:03 C 09 04 46.00 +41 29 55.6 726
2001-01-22 03:48:03 C 09 04 45.30 +41 29 56.2 726
2001-01-24 04:56:12 C 08 58 01.82 +41 37 48.7 750
2001-01-24 05:27:11 C 08 57 57.29 +41 37 53.7 750
2001-01-24 05:30:31 C 08 57 56.80 +41 37 53.9 750
2001-01-24 05:45:01 C 08 57 54.70 +41 37 56.1 750
2001-01-26 21:36:07 C 08 48 35.21 +41 42 20.4 151
2001-01-26 21:38:21 C 08 48 34.87 +41 42 20.5 151
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)