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
2021-09-08 11:51:55 C 08 02 38.40 +30 24 31.6 V 703
2021-09-10 11:59:08 C 08 07 53.93 +30 11 03.4 U I41
2021-09-10 12:02:46 C 08 07 54.32 +30 11 02.4 U I41
2021-09-10 12:06:27 C 08 07 54.73 +30 11 01.3 U I41
2021-09-10 12:10:05 C 08 07 55.12 +30 11 00.3 U I41
2021-09-10 12:13:45 C 08 07 55.51 +30 10 59.3 U I41
2021-09-14 12:04:01 C 08 18 20.92 +29 42 17.6 U I41
2021-09-14 12:07:31 C 08 18 21.29 +29 42 16.6 U I41
2021-09-14 12:11:00 C 08 18 21.67 +29 42 15.4 U I41
2021-09-14 12:14:29 C 08 18 22.05 +29 42 14.4 U I41
2021-09-14 12:17:59 C 08 18 22.42 +29 42 13.2 U I41
2021-09-15 11:47:21 C 08 20 55.02 +29 34 49.2 V 703
2021-09-15 11:52:28 C 08 20 55.63 +29 34 47.1 V 703
2021-09-15 11:57:35 C 08 20 56.25 +29 34 45.5 V 703
2021-09-15 12:02:42 C 08 20 56.79 +29 34 42.7 V 703
2021-09-15 12:02:46 C 08 20 56.74 +29 34 44.0 U I41
2021-09-15 12:06:15 C 08 20 57.12 +29 34 42.8 U I41
2021-09-15 12:09:44 C 08 20 57.49 +29 34 41.8 U I41
2021-09-15 12:13:14 C 08 20 57.88 +29 34 40.5 U I41
2021-09-15 12:16:43 C 08 20 58.24 +29 34 39.7 U I41
2021-09-16 12:09:32 C 08 23 33.18 +29 26 58.8 U I41
2021-09-16 12:13:12 C 08 23 33.58 +29 26 57.3 U I41
2021-09-16 12:16:51 C 08 23 33.97 +29 26 56.5 U I41
2021-09-16 12:20:31 C 08 23 34.37 +29 26 55.2 U I41
2021-10-09 11:41:11 C 09 22 04.94 +25 48 41.7 V 703
2021-10-09 11:46:56 C 09 22 05.61 +25 48 40.3 V 703
2021-10-09 11:52:40 C 09 22 06.23 +25 48 37.0 V 703
2021-10-09 11:58:25 C 09 22 06.79 +25 48 35.0 V 703
2021-10-13 11:10:01 C 09 32 00.81 +25 03 07.6 U I41
2021-10-13 11:37:13 C 09 32 03.61 +25 02 56.7 V 703
2021-10-13 11:44:54 C 09 32 04.38 +25 02 51.2 V 703
2021-10-13 12:00:15 C 09 32 06.03 +25 02 44.1 V 703
2021-10-13 12:13:33 C 09 32 07.36 +25 02 37.3 U I41
2021-10-14 14:39:28 C 09 34 51.77 +24 49 37.0 V T08
2021-10-14 15:02:45 C 09 34 54.16 +24 49 25.5 V T08
2021-10-14 15:10:43 C 09 34 54.98 +24 49 21.6 V T08
2021-10-14 15:22:01 C 09 34 56.09 +24 49 15.8 V T08
2021-10-15 11:16:20 C 09 36 59.80 +24 39 18.7 U I41
2021-10-15 12:15:12 C 09 37 05.84 +24 38 49.5 U I41
2021-10-16 11:04:41 C 09 39 27.48 +24 27 18.4 V 703
2021-10-16 11:11:35 C 09 39 28.17 +24 27 14.9 V 703
2021-10-16 11:18:28 C 09 39 28.88 +24 27 11.6 V 703
2021-10-16 11:25:22 C 09 39 29.60 +24 27 08.2 V 703
2021-11-03 11:30:10 C 10 23 48.96 +20 23 43.2 V 703
2021-11-03 11:37:45 C 10 23 49.76 +20 23 38.3 V 703
2021-11-03 11:45:22 C 10 23 50.52 +20 23 33.3 V 703
2021-11-03 11:52:57 C 10 23 51.18 +20 23 27.9 V 703
2021-11-08 12:53:56 S 10 36 23.954 +19 06 38.16 V C57
2021-11-08 12:53:56 s 1 +173903.87 3 +121269.88 8100.0 C57
2021-11-08 15:03:56 S 10 36 37.558 +19 05 08.02 V C57
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)