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
2022-07-11 11:11:58 C 02 46 10.643 +20 12 56.34 V 703
2022-08-03 00:20:49 C 03 35 51.050 +27 33 35.45 X L10
2022-08-03 00:21:19 C 03 35 51.111 +27 33 35.51 X L10
2022-08-03 00:21:49 C 03 35 51.174 +27 33 35.96 X L10
2022-08-03 00:22:19 C 03 35 51.208 +27 33 36.40 X L10
2022-08-03 00:22:49 C 03 35 51.254 +27 33 36.59 X L10
2022-08-03 00:23:19 C 03 35 51.290 +27 33 37.03 X L10
2022-08-03 00:23:49 C 03 35 51.338 +27 33 37.41 X L10
2022-08-03 00:24:19 C 03 35 51.374 +27 33 37.82 X L10
2022-08-03 00:24:49 C 03 35 51.397 +27 33 37.66 X L10
2022-08-03 00:25:19 C 03 35 51.481 +27 33 38.40 X L10
2022-08-03 02:17:49 C 03 36 01.199 +27 35 03.65 X L10
2022-08-03 02:18:19 C 03 36 01.234 +27 35 04.07 X L10
2022-08-03 02:18:49 C 03 36 01.280 +27 35 04.44 X L10
2022-08-03 02:19:19 C 03 36 01.330 +27 35 04.80 X L10
2022-08-03 02:19:49 C 03 36 01.366 +27 35 05.09 X L10
2022-08-03 02:20:19 C 03 36 01.405 +27 35 05.57 X L10
2022-08-03 02:20:49 C 03 36 01.454 +27 35 05.89 X L10
2022-08-03 02:21:19 C 03 36 01.501 +27 35 06.22 X L10
2022-08-03 02:21:49 C 03 36 01.528 +27 35 06.65 X L10
2022-08-03 02:22:19 C 03 36 01.564 +27 35 07.15 X L10
2022-08-04 00:11:08 C 03 37 55.715 +27 51 18.92 X L10
2022-08-04 00:11:38 C 03 37 55.773 +27 51 19.36 X L10
2022-08-04 00:12:08 C 03 37 55.829 +27 51 19.76 X L10
2022-08-04 00:12:38 C 03 37 55.874 +27 51 20.05 X L10
2022-08-04 00:13:08 C 03 37 55.903 +27 51 20.48 X L10
2022-08-04 00:13:38 C 03 37 55.927 +27 51 20.49 X L10
2022-08-04 00:14:08 C 03 37 55.978 +27 51 21.08 X L10
2022-08-04 00:14:38 C 03 37 56.008 +27 51 21.79 X L10
2022-08-04 00:15:08 C 03 37 56.054 +27 51 22.05 X L10
2022-08-04 00:15:38 C 03 37 56.111 +27 51 22.39 X L10
2022-08-04 02:26:35 C 03 38 07.363 +27 53 00.45 X L10
2022-08-04 02:27:05 C 03 38 07.408 +27 53 00.85 X L10
2022-08-04 02:27:35 C 03 38 07.453 +27 53 01.14 X L10
2022-08-04 02:28:05 C 03 38 07.495 +27 53 01.73 X L10
2022-08-04 02:28:35 C 03 38 07.538 +27 53 01.96 X L10
2022-08-04 02:29:05 C 03 38 07.590 +27 53 02.26 X L10
2022-08-04 02:29:35 C 03 38 07.628 +27 53 03.07 X L10
2022-08-04 02:30:05 C 03 38 07.664 +27 53 03.20 X L10
2022-08-04 02:30:35 C 03 38 07.720 +27 53 03.75 X L10
2022-08-04 02:31:05 C 03 38 07.745 +27 53 04.07 X L10
2022-08-05 00:23:44 C 03 40 01.621 +28 09 11.78 X L10
2022-08-05 00:24:14 C 03 40 01.655 +28 09 12.11 X L10
2022-08-05 00:24:44 C 03 40 01.709 +28 09 12.45 X L10
2022-08-05 00:25:14 C 03 40 01.759 +28 09 12.88 X L10
2022-08-05 00:25:44 C 03 40 01.804 +28 09 13.32 X L10
2022-08-05 00:26:14 C 03 40 01.850 +28 09 13.66 X L10
2022-08-05 00:26:44 C 03 40 01.902 +28 09 13.95 X L10
2022-08-05 00:27:14 C 03 40 01.941 +28 09 14.36 X L10
2022-08-05 00:27:44 C 03 40 01.976 +28 09 14.67 X L10
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)