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
1969-09-10 02:38:12 A 20 29 07.81 -05 48 34.9 805
1969-09-10 03:28:04 A 20 29 16.14 -05 45 35.8 805
1969-09-10 03:33:03 A 20 29 16.95 -05 45 18.5 805
1969-09-10 03:38:02 A 20 29 17.76 -05 45 00.8 805
1969-09-10 11:17:46 A 20 30 42.68 -05 18 12.9 420
1969-09-10 18:17:13 A 20 31 57.09 -04 55 57.4 073
1969-09-10 19:15:04 A 20 32 07.23 -04 52 47.7 073
1969-09-10 19:27:32 A 20 32 08.40 -04 52 05.8 073
1969-09-10 20:21:21 A 20 32 18.90 -04 49 06.3 999
1969-09-10 20:29:21 A 20 32 18.25 -04 48 40.2 095
1969-09-10 20:30:20 A 20 32 20.33 -04 48 37.3 999
1969-09-10 20:39:18 A 20 32 21.72 -04 48 08.4 999
1969-09-10 20:47:17 A 20 32 21.12 -04 47 41.9 095
1969-09-10 20:54:17 A 20 32 23.67 -04 47 19.8 073
1969-09-10 21:42:52 A 20 32 31.32 -04 44 37.3 020
1969-09-10 21:50:51 A 20 32 32.44 -04 44 11.6 020
1969-09-10 21:56:06 A 20 32 33.84 -04 43 55.9 999
1969-09-10 22:05:04 A 20 32 35.18 -04 43 29.4 999
1969-09-10 22:14:02 A 20 32 36.53 -04 43 00.8 999
1969-09-10 23:45:01 A 20 32 50.70 -04 38 00.7 13.5 026
1969-09-10 23:52:56 A 20 32 52.08 -04 37 36.7 026
1969-09-11 02:34:04 A 20 33 22 -04 28.8 774
1969-09-11 03:13:01 A 20 33 28 -04 26.7 774
1969-09-11 20:12:26 A 20 36 14.80 -03 34 25.3 999
1969-09-11 20:21:24 A 20 36 16.19 -03 33 58.6 999
1969-09-11 20:30:23 A 20 36 17.45 -03 33 32.2 999
1969-09-11 21:05:17 A 20 36 22.52 -03 31 48.8 999
1969-09-11 21:14:16 A 20 36 23.77 -03 31 22.6 999
1969-09-11 21:23:14 A 20 36 25.08 -03 30 56.0 999
1969-09-11 21:48:17 A 20 36 28.40 -03 29 46.7 012
1969-09-11 21:51:10 A 20 36 29.06 -03 29 33.4 999
1969-09-11 22:00:08 A 20 36 30.40 -03 29 06.7 999
1969-09-11 22:09:07 A 20 36 31.66 -03 28 40.7 999
1969-09-11 22:20:12 A 20 36 33.15 -03 28 13.0 012
1969-09-12 00:29:46 A 20 36 55.60 -03 20 29.0 805
1969-09-12 00:33:46 A 20 36 56.23 -03 20 17.8 805
1969-09-12 00:37:45 A 20 36 56.75 -03 20 05.9 805
1969-09-12 00:41:44 A 20 36 57.29 -03 19 54.7 805
1969-09-12 00:45:24 A 20 36 57.86 -03 19 43.7 805
1969-09-12 02:27:06 A 20 37 13 -03 16.0 774
1969-09-12 02:38:07 A 20 37 15 -03 15.6 774
1969-09-12 11:00:19 A 20 38 30.76 -02 50 33.4 420
1969-09-12 18:27:26 A 20 39 37.24 -02 31 24.9 095
1969-09-12 18:41:51 A 20 39 39.26 -02 30 45.7 095
1969-09-12 20:26:42 A 20 39 54.44 -02 26 04.9 020
1969-09-12 20:33:11 A 20 39 55.27 -02 25 47.6 020
1969-09-12 20:40:10 A 20 39 56.21 -02 25 27.8 020
1969-09-12 21:07:03 A 20 39 59.81 -02 24 17.5 026
1969-09-12 21:14:58 A 20 40 00.88 -02 23 57.5 026
1969-09-12 22:12:38 A 20 40 08.82 -02 21 23.4 012
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)