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
2026-04-05 04:21:19 C 06 41 57.383 +19 16 51.89 V G96
2026-04-05 06:25:23 C 06 42 03.451 +19 14 54.38 V T05
2026-04-05 06:26:02 C 06 42 03.487 +19 14 53.95 V T05
2026-04-05 06:52:44 C 06 42 04.661 +19 14 27.20 V T05
2026-04-05 19:24:09 C 06 42 40.860 +19 02 03.95 X C40
2026-04-05 19:26:18 C 06 42 40.922 +19 02 01.32 X C40
2026-04-05 19:28:27 C 06 42 41.011 +19 02 00.10 X C40
2026-04-05 19:30:36 C 06 42 41.110 +19 01 57.36 X C40
2026-04-05 19:32:43 C 06 42 41.246 +19 01 55.49 X C40
2026-04-05 19:34:52 C 06 42 41.338 +19 01 52.79 X C40
2026-04-05 19:37:01 C 06 42 41.455 +19 01 50.52 X C40
2026-04-05 20:42:06 C 06 42 44.791 +19 00 46.55 Z C23
2026-04-05 22:01:12 C 06 42 48.494 +18 59 27.38 Z C23
2026-04-06 19:35:48 C 06 43 51.828 +18 38 20.76 X C40
2026-04-06 19:40:44 C 06 43 52.068 +18 38 15.50 X C40
2026-04-06 19:55:17 C 06 43 52.786 +18 38 01.32 X C40
2026-04-06 19:59:40 C 06 43 52.982 +18 37 56.57 X C40
2026-04-06 20:04:03 C 06 43 53.189 +18 37 52.39 X C40
2026-04-06 20:12:51 C 06 43 53.590 +18 37 43.86 X C40
2026-04-06 20:21:38 C 06 43 54.005 +18 37 34.93 X C40
2026-04-06 20:26:01 C 06 43 54.269 +18 37 30.11 X C40
2026-04-08 01:06:44 B 06 45 20.462 +18 09 21.96 W X04
2026-04-08 01:12:55 B 06 45 20.741 +18 09 15.80 W X04
2026-04-08 01:21:08 B 06 45 21.146 +18 09 07.96 W X04
2026-04-08 19:32:33 B 06 46 16.606 +17 51 15.19 X M19
2026-04-08 19:39:08 B 06 46 16.877 +17 51 07.92 X M19
2026-04-08 19:43:02 B 06 46 17.093 +17 51 04.68 X M19
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)