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
2021-08-10 11:58:57 C 06 44 54.86 +32 27 07.5 U I41
2021-08-10 12:02:25 C 06 44 55.26 +32 27 07.4 U I41
2021-08-10 12:05:51 C 06 44 55.64 +32 27 06.9 U I41
2021-08-12 11:53:00 C 06 50 20.92 +32 23 10.5 U I41
2021-08-12 12:07:00 C 06 50 22.53 +32 23 09.4 U I41
2021-08-13 11:54:04 C 06 53 04.20 +32 20 56.4 U I41
2021-08-13 11:57:28 C 06 53 04.59 +32 20 56.3 U I41
2021-08-13 12:00:54 C 06 53 04.97 +32 20 55.8 U I41
2021-08-13 12:04:20 C 06 53 05.36 +32 20 55.7 U I41
2021-08-13 12:07:44 C 06 53 05.75 +32 20 55.1 U I41
2021-08-17 11:57:52 C 07 03 55.49 +32 10 17.8 U I41
2021-08-17 12:01:18 C 07 03 55.86 +32 10 17.1 U I41
2021-08-17 12:04:46 C 07 03 56.25 +32 10 16.8 U I41
2021-08-17 12:08:13 C 07 03 56.65 +32 10 16.7 U I41
2021-08-18 11:58:24 C 07 06 37.81 +32 07 12.6 U I41
2021-08-18 12:01:50 C 07 06 38.18 +32 07 12.1 U I41
2021-08-18 12:05:17 C 07 06 38.59 +32 07 11.8 U I41
2021-08-18 12:08:43 C 07 06 38.94 +32 07 11.4 U I41
2021-08-18 12:12:11 C 07 06 39.35 +32 07 10.8 U I41
2021-08-20 12:05:10 C 07 12 02.56 +32 00 31.6 U I41
2021-08-20 12:08:34 C 07 12 02.95 +32 00 30.9 U I41
2021-08-20 12:11:58 C 07 12 03.33 +32 00 30.6 U I41
2021-08-20 12:15:22 C 07 12 03.69 +32 00 30.2 U I41
2021-08-27 11:51:58 C 07 30 49.07 +31 31 58.8 U I41
2021-08-27 11:55:32 C 07 30 49.46 +31 31 58.2 U I41
2021-08-27 11:59:04 C 07 30 49.87 +31 31 57.5 U I41
2021-08-27 12:02:38 C 07 30 50.27 +31 31 57.0 U I41
2021-09-02 11:52:49 C 07 46 47.98 +31 01 07.2 U I41
2021-09-02 11:56:28 C 07 46 48.39 +31 01 06.3 U I41
2021-09-02 12:00:05 C 07 46 48.78 +31 01 05.5 U I41
2021-09-02 12:03:42 C 07 46 49.18 +31 01 04.8 U I41
2021-09-02 12:07:19 C 07 46 49.58 +31 01 03.9 U I41
2021-09-03 11:54:41 C 07 49 27.21 +30 55 24.5 U I41
2021-09-03 11:58:18 C 07 49 27.61 +30 55 23.6 U I41
2021-09-03 12:01:59 C 07 49 28.01 +30 55 22.8 U I41
2021-09-03 12:05:37 C 07 49 28.40 +30 55 22.0 U I41
2021-09-03 12:09:17 C 07 49 28.81 +30 55 21.1 U I41
2021-09-04 11:53:18 C 07 52 05.84 +30 49 33.1 U I41
2021-09-04 11:56:56 C 07 52 06.24 +30 49 32.3 U I41
2021-09-04 12:00:36 C 07 52 06.64 +30 49 31.4 U I41
2021-09-04 12:04:14 C 07 52 07.03 +30 49 30.5 U I41
2021-09-04 12:07:55 C 07 52 07.43 +30 49 29.7 U I41
2021-09-05 11:55:45 C 07 54 44.64 +30 43 31.3 U I41
2021-09-05 11:59:21 C 07 54 45.04 +30 43 30.3 U I41
2021-09-05 12:02:59 C 07 54 45.43 +30 43 29.5 U I41
2021-09-05 12:06:36 C 07 54 45.82 +30 43 28.7 U I41
2021-09-05 12:10:14 C 07 54 46.23 +30 43 27.8 U I41
2021-09-08 11:28:43 C 08 02 35.71 +30 24 38.4 V 703
2021-09-08 11:36:27 C 08 02 36.64 +30 24 37.3 V 703
2021-09-08 11:44:10 C 08 02 37.52 +30 24 34.7 V 703
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)