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
1969-09-12 22:47:36 A 20 40 13.49 -02 19 53.8 012
1969-09-13 00:51:45 A 20 40 33.45 -02 13 06.8 805
1969-09-13 00:55:44 A 20 40 33.98 -02 12 56.2 805
1969-09-13 00:59:43 A 20 40 34.53 -02 12 45.3 805
1969-09-13 01:03:43 A 20 40 35.02 -02 12 35.2 805
1969-09-13 01:07:42 A 20 40 35.55 -02 12 24.4 805
1969-09-13 03:07:41 A 20 40 51 -02 03.0 774
1969-09-13 13:44:28 A 20 42 54.74 -01 31 35.1 073
1969-09-13 18:35:57 A 20 43 01.10 -01 29 27.5 095
1969-09-13 18:48:31 A 20 43 02.68 -01 28 56.7 095
1969-09-13 19:10:16 A 20 43 05.34 -01 28 04.1 095
1969-09-13 19:25:57 A 20 43 07.29 -01 27 25.8 095
1969-09-14 00:52:45 A 20 43 52.38 -01 13 05.2 805
1969-09-14 00:57:45 A 20 43 52.94 -01 12 53.4 805
1969-09-14 01:02:44 A 20 43 53.50 -01 12 41.8 805
1969-09-14 01:52:36 A 20 43 59.44 -01 10 45.3 805
1969-09-14 01:57:34 A 20 44 00.03 -01 10 32.9 805
1969-09-14 02:02:34 A 20 44 00.58 -01 10 21.5 805
1969-09-14 02:52:26 A 20 44 06.54 -01 08 24.5 805
1969-09-14 02:57:25 A 20 44 07.12 -01 08 13.1 805
1969-09-14 03:02:24 A 20 44 07.70 -01 08 00.8 805
1969-09-14 03:52:16 A 20 44 13.73 -01 06 04.9 805
1969-09-14 03:57:15 A 20 44 14.27 -01 05 53.8 805
1969-09-14 04:02:15 A 20 44 14.84 -01 05 42.3 805
1969-09-14 04:05:47 A 20 44 09 -01 09.0 774
1969-09-14 04:15:48 A 20 44 11 -01 08.6 774
1969-09-14 04:52:07 A 20 44 21.01 -01 03 46.2 805
1969-09-14 04:57:06 A 20 44 21.54 -01 03 34.7 805
1969-09-14 05:02:04 A 20 44 22.13 -01 03 22.8 805
1969-09-15 01:44:55 A 20 47 03 -00 17.9 774
1969-09-15 01:53:36 A 20 47 04.19 -00 16 33.4 805
1969-09-15 01:55:55 A 20 47 06 -00 17.8 774
1969-09-15 01:58:36 A 20 47 04.76 -00 16 22.5 805
1969-09-15 02:03:35 A 20 47 05.38 -00 16 12.1 805
1969-09-15 04:08:15 A 20 47 19.21 -00 11 50.6 805
1969-09-15 04:13:14 A 20 47 19.72 -00 11 40.6 805
1969-09-15 04:18:13 A 20 47 20.32 -00 11 29.5 805
1969-09-15 18:41:16 A 20 49 06.50 +00 17 13.5 095
1969-09-15 18:55:24 A 20 49 07.95 +00 17 42.3 095
1969-09-15 19:16:57 A 20 49 10.33 +00 18 25.5 095
1969-09-15 19:32:20 A 20 49 11.92 +00 18 55.7 095
1969-09-15 22:07:05 A 20 49 29.72 +00 24 03.3 020
1969-09-15 22:14:05 A 20 49 30.53 +00 24 18.4 020
1969-09-16 01:36:40 A 20 49 55.32 +00 32 04.9 805
1969-09-16 01:40:40 A 20 49 55.80 +00 32 12.0 805
1969-09-16 01:44:39 A 20 49 56.27 +00 32 20.1 805
1969-09-16 11:01:33 A 20 51 00.20 +00 50 11.5 420
1969-09-16 22:05:21 A 20 52 14.23 +01 09 33.8 012
1969-09-18 02:44:45 A 20 55 19 +01 58.9 774
1969-09-18 02:46:33 A 20 55 18.74 +01 59 58.8 805
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)