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
2025-11-10 13:24:47 C 08 53 03.746 +36 44 44.45 V T08
2025-11-10 13:42:00 C 08 53 04.750 +36 44 45.67 V T08
2025-11-15 03:28:02 C 08 59 37.092 +36 56 54.60 V R17
2025-11-15 03:48:25 C 08 59 38.210 +36 56 57.26 V R17
2025-11-15 04:08:48 C 08 59 39.326 +36 57 00.11 V R17
2025-11-15 04:29:10 C 08 59 40.438 +36 57 02.92 V R17
2025-11-16 13:29:37 C 09 01 31.126 +37 01 20.86 V T05
2025-11-16 13:34:12 C 09 01 31.344 +37 01 21.83 V T05
2025-11-16 13:38:47 C 09 01 31.570 +37 01 22.55 V T05
2025-11-16 13:52:55 C 09 01 32.318 +37 01 24.10 V T05
2025-11-17 19:56:53 C 09 03 10.009 +37 05 31.19 W O18
2025-11-17 21:02:32 C 09 03 13.379 +37 05 41.29 W O18
2025-11-18 23:50:02 C 09 04 37.829 +37 09 35.28 X B67
2025-11-18 23:52:25 C 09 04 37.942 +37 09 35.75 X B67
2025-11-18 23:54:51 C 09 04 38.064 +37 09 36.11 X B67
2025-11-20 01:37:04 C 09 05 56.674 +37 13 37.81 V R17
2025-11-20 01:57:26 C 09 05 57.665 +37 13 41.45 V R17
2025-11-20 02:17:49 C 09 05 58.658 +37 13 45.05 V R17
2025-11-20 02:38:12 C 09 05 59.657 +37 13 48.86 V R17
2025-11-24 12:55:13 C 09 10 57.266 +37 32 39.55 V T05
2025-11-24 12:59:09 C 09 10 57.434 +37 32 40.34 V T05
2025-11-24 13:03:44 C 09 10 57.638 +37 32 41.42 V T05
2025-11-24 13:38:40 C 09 10 59.038 +37 32 48.48 V T05
2025-11-25 14:16:47 C 09 12 01.438 +37 37 43.55 X F52
2025-11-25 14:32:53 C 09 12 02.047 +37 37 46.87 X F52
2025-11-25 14:48:53 C 09 12 02.670 +37 37 50.24 X F52
2025-11-25 15:05:01 C 09 12 03.285 +37 37 53.51 X F52
2025-11-28 13:04:00 C 09 14 46.783 +37 53 02.44 V T08
2025-11-28 13:06:38 C 09 14 46.872 +37 53 03.34 V T08
2025-11-28 13:10:25 C 09 14 47.009 +37 53 03.77 V T05
2025-11-28 13:10:38 C 09 14 47.004 +37 53 04.27 V T08
2025-11-28 13:13:02 C 09 14 47.093 +37 53 04.78 V T05
2025-11-28 13:17:36 C 09 14 47.246 +37 53 05.50 V T05
2025-11-28 13:17:55 C 09 14 47.239 +37 53 05.89 V T08
2025-11-28 13:50:40 C 09 14 48.336 +37 53 13.52 V T05
2025-11-28 19:02:04 C 09 14 59.796 +37 54 20.87 W O18
2025-11-28 20:54:23 C 09 15 03.550 +37 54 48.49 W O18
2025-11-29 12:54:18 C 09 15 37.370 +37 58 36.66 V T05
2025-11-29 12:58:19 C 09 15 37.495 +37 58 37.60 V T05
2025-11-29 13:25:03 C 09 15 38.340 +37 58 44.51 V T05
2025-11-29 13:32:15 C 09 15 38.570 +37 58 46.16 V T05
2025-11-30 02:16:13 C 09 16 04.685 +38 01 47.50 V R17
2025-11-30 02:36:35 C 09 16 05.333 +38 01 52.68 V R17
2025-11-30 02:56:58 C 09 16 05.957 +38 01 58.04 V R17
2025-11-30 03:17:20 C 09 16 06.581 +38 02 03.44 V R17
2025-11-30 12:42:40 C 09 16 25.210 +38 04 23.48 V T05
2025-11-30 12:46:41 C 09 16 25.334 +38 04 24.60 V T05
2025-11-30 12:51:16 C 09 16 25.466 +38 04 25.75 V T05
2025-11-30 12:51:56 C 09 16 25.478 +38 04 25.72 V T05
2025-11-30 12:54:37 C 09 16 25.538 +38 04 26.40 V T05
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)