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
2026-01-01 21:59:35 C 09 06 50.63 +43 05 54.0 X C40
2026-01-01 22:01:18 C 09 06 50.50 +43 05 54.9 X C40
2026-01-01 22:03:00 C 09 06 50.37 +43 05 55.6 X C40
2026-01-01 22:04:43 C 09 06 50.23 +43 05 56.6 X C40
2026-01-01 22:06:26 C 09 06 50.10 +43 05 57.3 X C40
2026-01-01 22:08:09 C 09 06 49.96 +43 05 58.2 X C40
2026-01-01 22:09:52 C 09 06 49.84 +43 05 59.0 X C40
2026-01-01 23:23:04 B 09 06 44.23 +43 06 32.4 X L76
2026-01-01 23:35:48 B 09 06 43.24 +43 06 38.3 X L76
2026-01-01 23:48:31 B 09 06 42.25 +43 06 44.1 X L76
2026-01-02 09:21:12 C 09 06 00.938 +43 11 08.27 V T08
2026-01-02 09:33:21 C 09 05 59.981 +43 11 14.21 V T08
2026-01-02 09:36:02 C 09 05 59.777 +43 11 15.43 V T08
2026-01-02 09:58:50 C 09 05 57.974 +43 11 26.38 V T08
2026-01-03 22:42:44 B 09 03 04.856 +43 27 46.61 W Z80
2026-01-03 22:48:36 B 09 03 04.368 +43 27 49.13 W Z80
2026-01-06 21:27:42 C 08 56 46.50 +43 57 59.7 X C40
2026-01-06 21:29:38 C 08 56 46.32 +43 58 00.9 X C40
2026-01-06 21:38:43 C 08 56 45.37 +43 58 04.3 X C40
2026-01-06 21:42:09 C 08 56 45.08 +43 58 06.1 X C40
2026-01-06 21:45:36 C 08 56 44.73 +43 58 08.0 X C40
2026-01-06 21:47:19 C 08 56 44.53 +43 58 08.2 X C40
2026-01-07 19:17:22 C 08 54 36.95 +44 06 48.7 V D29
2026-01-07 19:37:44 C 08 54 34.78 +44 06 56.2 V D29
2026-01-07 19:58:06 C 08 54 32.66 +44 07 04.0 V D29
2026-01-07 21:23:29 C 08 54 25.14 +44 07 35.0 X C40
2026-01-07 21:27:20 C 08 54 24.76 +44 07 36.6 X C40
2026-01-07 21:29:10 C 08 54 24.55 +44 07 37.2 X C40
2026-01-07 21:30:53 C 08 54 24.38 +44 07 37.8 X C40
2026-01-07 21:32:36 C 08 54 24.20 +44 07 38.5 X C40
2026-01-07 21:34:19 C 08 54 24.00 +44 07 39.1 X C40
2026-01-07 21:36:03 C 08 54 23.84 +44 07 39.9 X C40
2026-01-07 21:37:45 C 08 54 23.65 +44 07 40.7 X C40
2026-01-07 21:39:29 C 08 54 23.45 +44 07 41.4 X C40
2026-01-07 21:41:12 C 08 54 23.27 +44 07 42.2 X C40
2026-01-08 20:08:43 C 08 52 03.28 +44 16 21.8 V D29
2026-01-08 20:38:47 C 08 51 59.98 +44 16 32.3 V D29
2026-01-09 10:10:41 C 08 50 34.797 +44 21 37.28 X F51
2026-01-09 10:26:57 C 08 50 32.945 +44 21 43.44 X F51
2026-01-09 10:43:13 C 08 50 31.094 +44 21 49.77 X F51
2026-01-09 10:59:33 C 08 50 29.240 +44 21 55.86 X F51
2026-01-09 15:50:06 C 08 49 57.88 +44 23 37.1 V D29
2026-01-09 16:09:11 C 08 49 55.70 +44 23 44.3 V D29
2026-01-09 16:28:17 C 08 49 53.51 +44 23 51.5 V D29
2026-01-10 07:51:45 C 08 48 12.055 +44 29 15.94 V T08
2026-01-10 07:55:36 C 08 48 11.616 +44 29 17.41 V T08
2026-01-10 08:45:08 C 08 48 05.870 +44 29 36.35 V T08
2026-01-10 09:05:40 C 08 48 03.475 +44 29 43.94 V T08
2026-01-12 15:44:47 C 08 41 36.882 +44 47 03.95 W Q21
2026-01-12 15:49:50 C 08 41 36.232 +44 47 05.32 W Q21
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)