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
2001-03-09 05:41:23 C 06 46 41.67 +27 45 06.0 649
2001-03-09 06:11:45 C 06 46 40.31 +27 44 26.5 649
2001-03-09 07:01:19 C 06 46 38.10 +27 43 21.3 649
2001-03-10 01:14:01 C 06 45 55.06 +27 20 12.9 739
2001-03-10 01:17:10 C 06 45 54.93 +27 20 08.7 739
2001-03-10 01:19:57 C 06 45 54.78 +27 20 05.3 739
2001-03-11 01:24:18 C 06 45 00.16 +26 49 23.5 932
2001-03-11 02:01:51 C 06 44 58.60 +26 48 35.5 932
2001-03-11 02:45:57 C 06 44 56.81 +26 47 38.6 932
2001-03-12 03:11:47 C 06 44 07.40 +26 16 32.1 932
2001-03-12 03:28:39 C 06 44 06.78 +26 16 10.5 932
2001-03-12 03:41:48 C 06 44 06.26 +26 15 53.4 932
2001-03-14 18:40:31 C 06 42 23.62 +24 56 02.7 610
2001-03-14 18:45:31 C 06 42 23.48 +24 55 56.3 610
2001-03-14 18:50:30 C 06 42 23.34 +24 55 50.0 610
2001-03-14 18:55:30 C 06 42 23.20 +24 55 43.6 610
2001-03-14 19:00:31 C 06 42 23.07 +24 55 37.3 610
2001-03-14 21:35:00 C 06 42 18.84 +24 52 19.8 205
2001-03-14 21:45:00 C 06 42 18.58 +24 52 07.2 205
2001-03-14 22:14:00 C 06 42 17.82 +24 51 29.9 205
2001-03-17 22:20:47 C 06 40 59.61 +23 20 49.4 14.9 939
2001-03-17 22:29:47 C 06 40 59.42 +23 20 37.5 15.1 939
2001-03-17 22:38:46 C 06 40 59.23 +23 20 26.1 14.9 939
2001-03-18 02:49:59 C 06 40 56.57 +23 15 12.5 15.5 c 704
2001-03-18 03:08:22 C 06 40 56.22 +23 14 49.4 15.6 c 704
2001-03-18 03:26:46 C 06 40 55.87 +23 14 26.1 15.1 c 704
2001-03-18 03:45:10 C 06 40 55.53 +23 14 02.7 15.1 c 704
2001-03-18 04:03:34 C 06 40 55.18 +23 13 39.4 15.3 c 704
2001-03-18 11:36:02 C 06 40 49.50 +23 04 12.3 349
2001-03-18 11:40:45 C 06 40 49.43 +23 04 06.1 349
2001-03-18 11:43:35 C 06 40 49.38 +23 04 02.6 349
2001-03-18 11:49:33 C 06 40 49.26 +23 03 54.8 349
2001-03-18 11:52:34 C 06 40 49.25 +23 03 51.1 349
2001-03-18 20:02:49 C 06 40 43.87 +22 53 41.4 16.9 939
2001-03-18 20:08:50 C 06 40 43.80 +22 53 33.8 17.1 939
2001-03-18 20:23:49 C 06 40 43.61 +22 53 15.4 18.6 939
2001-03-22 21:33:59 C 06 40 08.01 +20 52 18.8 205
2001-03-22 21:45:00 C 06 40 07.96 +20 52 05.3 205
2001-03-22 22:12:00 C 06 40 07.92 +20 51 30.9 205
2001-03-25 20:50:59 C 06 40 16.98 +19 24 30.8 205
2001-03-25 21:08:00 C 06 40 16.99 +19 24 10.3 205
2001-03-25 21:15:59 C 06 40 17.01 +19 24 00.0 205
2001-03-31 02:56:48 C 06 41 31.25 +16 50 23.6 15.8 c 704
2001-03-31 03:17:07 C 06 41 31.44 +16 49 58.9 16.7 c 704
2001-03-31 03:37:30 C 06 41 31.64 +16 49 33.7 17.0 c 704
2001-03-31 03:57:51 C 06 41 31.83 +16 49 08.7 16.4 c 704
2001-03-31 04:18:13 C 06 41 32.05 +16 48 43.5 15.5 c 704
2001-04-09 20:42:59 C 06 45 58.13 +12 04 27.6 205
2001-04-09 20:57:59 C 06 45 58.43 +12 04 09.1 205
2001-04-09 21:00:00 C 06 45 58.45 +12 04 05.8 205
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)