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
1969-08-30 01:17:22 A 18 37 22.21 -37 06 13.0 805
1969-08-30 01:17:52 A 18 37 22.67 -37 06 07.5 805
1969-08-30 01:33:29 A 18 37 36.46 -37 03 19.6 807
1969-08-30 02:08:30 A 18 38 07.71 -36 56 46.8 807
1969-08-30 02:53:30 A 18 38 47.73 -36 48 20.0 807
1969-08-30 03:08:30 A 18 39 01.08 -36 45 30.5 807
1969-08-30 03:26:29 A 18 39 17.09 -36 42 06.6 807
1969-08-30 03:40:59 A 18 39 29.89 -36 39 23.1 807
1969-08-30 23:38:30 A 18 56 34.27 -33 01 13.4 807
1969-08-30 23:53:30 A 18 56 45.43 -32 58 33.7 807
1969-08-31 00:00:06 A 18 56 54.06 -32 56 24.5 805
1969-08-31 00:00:36 A 18 56 54.45 -32 56 19.6 805
1969-08-31 00:01:06 A 18 56 54.80 -32 56 13.9 805
1969-08-31 00:01:36 A 18 56 55.12 -32 56 08.3 805
1969-08-31 00:02:06 A 18 56 55.47 -32 56 03.2 805
1969-08-31 00:06:29 A 18 56 55.10 -32 56 15.4 807
1969-08-31 00:26:00 A 18 57 09.47 -32 52 47.9 807
1969-08-31 00:38:59 A 18 57 19.05 -32 50 29.6 807
1969-08-31 00:57:57 A 18 57 33.09 -32 47 01.4 805
1969-08-31 00:58:57 A 18 57 33.73 -32 46 50.0 805
1969-08-31 00:59:56 A 18 57 34.55 -32 46 39.3 805
1969-08-31 01:01:01 A 18 57 35.33 -32 46 27.9 805
1969-08-31 01:11:00 A 18 57 42.56 -32 44 47.8 807
1969-08-31 01:30:59 A 18 57 57.19 -32 41 13.6 807
1969-08-31 02:15:00 A 18 58 29.30 -32 33 22.2 807
1969-08-31 03:33:59 A 18 59 26.76 -32 19 13.0 807
1969-08-31 04:07:59 A 18 59 51.49 -32 13 06.3 807
1969-08-31 04:20:59 A 19 00 00.90 -32 10 46.5 807
1969-09-01 17:36:40 A 19 24 27.00 -26 01 10.8 119
1969-09-01 17:59:29 A 19 24 39.41 -25 57 36.9 119
1969-09-01 18:09:59 A 19 24 44.95 -25 56 00.3 119
1969-09-01 18:36:59 A 19 24 59.34 -25 51 48.2 119
1969-09-01 19:12:30 A 19 25 18.37 -25 46 16.7 119
1969-09-01 19:23:30 A 19 25 24.13 -25 44 34.4 119
1969-09-01 20:02:37 A 19 25 48.65 -25 38 38.5 020
1969-09-01 23:44:13 A 19 27 52.86 -25 02 41.3 805
1969-09-01 23:45:14 A 19 27 53.36 -25 02 31.7 805
1969-09-01 23:46:14 A 19 27 53.85 -25 02 22.5 805
1969-09-01 23:47:13 A 19 27 54.36 -25 02 13.9 805
1969-09-01 23:48:13 A 19 27 54.91 -25 02 04.1 805
1969-09-02 00:02:59 A 19 28 02.53 -24 59 58.6 807
1969-09-02 00:11:00 A 19 28 06.56 -24 58 47.0 807
1969-09-02 00:31:00 A 19 28 16.72 -24 55 46.9 807
1969-09-02 01:37:30 A 19 28 50.24 -24 45 47.5 807
1969-09-02 04:52:30 A 19 30 27.66 -24 16 28.9 807
1969-09-02 05:07:29 A 19 30 35.19 -24 14 13.2 807
1969-09-02 16:54:59 A 19 36 35.47 -22 34 27.2 119
1969-09-02 17:06:59 A 19 36 40.98 -22 32 45.9 119
1969-09-02 18:28:29 A 19 37 17.65 -22 21 22.5 119
1969-09-02 18:43:35 A 19 37 24.38 -22 19 16.4 119
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)