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
1969-09-02 18:58:29 A 19 37 31.07 -22 17 11.0 119
1969-09-02 19:14:00 A 19 37 37.99 -22 15 00.9 119
1969-09-02 23:50:59 A 19 39 51.26 -21 35 00.5 807
1969-09-03 00:11:00 A 19 39 59.82 -21 32 19.5 807
1969-09-03 00:26:00 A 19 40 06.22 -21 30 18.1 807
1969-09-03 00:53:53 A 19 40 17.84 -21 26 29.9 808
1969-09-03 01:04:50 A 19 40 22.51 -21 25 01.1 808
1969-09-03 01:15:48 A 19 40 27.19 -21 23 32.4 808
1969-09-03 01:20:59 A 19 40 29.56 -21 22 52.5 807
1969-09-03 01:36:00 A 19 40 35.91 -21 20 51.5 807
1969-09-03 02:18:50 A 19 40 53.99 -21 14 59.8 805
1969-09-03 02:22:19 A 19 40 55.47 -21 14 30.8 805
1969-09-03 02:23:19 A 19 40 55.89 -21 14 23.3 805
1969-09-03 02:24:19 A 19 40 56.34 -21 14 15.6 805
1969-09-03 02:25:19 A 19 40 56.74 -21 14 07.5 805
1969-09-03 02:26:19 A 19 40 57.13 -21 13 59.2 805
1969-09-03 03:00:59 A 19 41 11.64 -21 09 24.2 807
1969-09-03 03:15:00 A 19 41 17.52 -21 07 30.3 807
1969-09-03 03:31:00 A 19 41 24.28 -21 05 20.5 807
1969-09-03 03:51:00 A 19 41 32.67 -21 02 39.2 807
1969-09-03 04:50:59 A 19 41 57.97 -20 54 33.8 807
1969-09-03 05:05:59 A 19 42 04.29 -20 52 32.7 807
1969-09-04 00:44:20 A 19 50 18.00 -18 23 28.2 808
1969-09-04 01:07:16 A 19 50 26.34 -18 20 41.5 808
1969-09-04 01:20:14 A 19 50 31.00 -18 19 08.4 808
1969-09-04 01:49:04 A 19 50 41.49 -18 15 38.5 805
1969-09-04 01:50:59 A 19 50 42.18 -18 15 29.2 807
1969-09-04 01:51:56 A 19 50 42.56 -18 15 17.4 805
1969-09-04 01:53:28 A 19 50 43.13 -18 15 06.2 805
1969-09-04 01:54:55 A 19 50 43.72 -18 14 56.1 805
1969-09-04 01:56:25 A 19 50 44.18 -18 14 45.4 805
1969-09-04 01:57:55 A 19 50 44.67 -18 14 34.7 805
1969-09-04 02:01:00 A 19 50 45.77 -18 14 17.1 807
1969-09-04 02:21:00 A 19 50 52.92 -18 11 54.0 807
1969-09-04 02:31:00 A 19 50 56.50 -18 10 40.9 807
1969-09-04 02:41:00 A 19 51 00.10 -18 09 29.2 807
1969-09-04 03:36:00 A 19 51 19.77 -18 02 52.9 807
1969-09-04 03:51:01 A 19 51 25.12 -18 01 04.4 807
1969-09-04 04:00:59 A 19 51 28.68 -17 59 52.4 807
1969-09-04 18:46:31 A 19 56 53.99 -16 20 10.2 095
1969-09-04 19:29:15 A 19 57 07.78 -16 15 29.6 095
1969-09-04 19:36:37 A 19 57 10.23 -16 14 41.4 095
1969-09-05 01:02:29 A 19 59 03.08 -15 37 29.9 807
1969-09-05 01:16:00 A 19 59 07.26 -15 36 03.3 807
1969-09-05 01:52:51 A 19 59 18.55 -15 32 04.7 808
1969-09-05 01:59:50 A 19 59 20.71 -15 31 19.4 808
1969-09-05 02:06:48 A 19 59 22.87 -15 30 34.6 808
1969-09-05 04:00:59 A 19 59 58.15 -15 18 27.5 807
1969-09-05 04:11:00 A 20 00 01.22 -15 17 23.8 807
1969-09-05 04:21:00 A 20 00 04.29 -15 16 19.9 807
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)