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
2022-09-06 05:43:49 S 04 38 50.22 +36 54 23.0 L C51
2022-09-06 11:59:32 S 04 39 13.36 +36 58 26.4 L C51
2022-09-06 12:59:16 C 04 39 17.892 +36 59 06.29 V T08
2022-09-06 13:01:54 C 04 39 18.077 +36 59 07.84 V T08
2022-09-06 13:10:28 C 04 39 18.545 +36 59 13.56 V T08
2022-09-06 13:20:11 C 04 39 19.152 +36 59 19.97 V T08
2022-09-06 15:07:18 S 04 39 24.90 +37 00 26.8 L C51
2022-09-07 14:14:33 C 04 40 50.028 +37 15 26.14 V T08
2022-09-07 14:17:51 C 04 40 50.218 +37 15 28.22 V T08
2022-09-07 14:19:10 C 04 40 50.292 +37 15 29.23 V T08
2022-09-07 14:44:01 C 04 40 51.732 +37 15 45.32 V T08
2022-09-07 14:48:54 C 04 40 51.984 +37 15 48.49 V T08
2022-09-07 14:50:57 C 04 40 52.118 +37 15 49.75 V T08
2022-09-07 15:13:56 C 04 40 53.441 +37 16 04.55 V T08
2022-09-07 15:14:36 C 04 40 53.498 +37 16 04.91 V T08
2022-09-09 13:41:41 C 04 43 38.292 +37 46 04.04 V T08
2022-09-09 13:45:04 C 04 43 38.462 +37 46 07.61 V T08
2022-09-09 14:20:16 C 04 43 40.402 +37 46 28.96 V T08
2022-09-09 14:47:50 C 04 43 41.957 +37 46 48.00 V T08
2022-09-10 17:32:28 C 04 45 13.80 +38 03 59.3 V D29
2022-09-10 17:47:55 C 04 45 14.66 +38 04 10.0 V D29
2022-09-10 18:03:22 C 04 45 15.53 +38 04 20.3 V D29
2022-09-11 12:58:57 C 04 46 18.826 +38 16 36.55 V T08
2022-09-11 13:22:21 C 04 46 20.081 +38 16 52.07 V T08
2022-09-11 13:26:21 C 04 46 20.292 +38 16 54.70 V T08
2022-09-13 13:53:33 C 04 48 56.628 +38 48 15.19 V T08
2022-09-13 13:58:12 C 04 48 56.875 +38 48 18.22 V T08
2022-09-13 14:06:11 C 04 48 57.257 +38 48 23.62 V T08
2022-09-13 14:14:10 C 04 48 57.662 +38 48 28.66 V T08
2022-09-14 12:15:34 C 04 50 06.226 +39 02 42.65 V T08
2022-09-14 12:19:33 C 04 50 06.437 +39 02 45.60 V T08
2022-09-14 12:54:08 C 04 50 08.114 +39 03 08.24 V T08
2022-09-14 13:18:56 C 04 50 09.317 +39 03 24.88 V T08
2022-09-15 11:20:09 C 04 51 15.936 +39 17 39.37 V T08
2022-09-15 12:00:50 C 04 51 17.873 +39 18 06.55 V T08
2022-09-15 12:05:29 C 04 51 18.132 +39 18 09.65 V T08
2022-09-15 12:19:06 C 04 51 18.749 +39 18 18.86 V T08
2022-09-19 14:00:19 C 04 55 49.140 +40 21 54.07 V T08
2022-09-19 14:05:38 C 04 55 49.342 +40 21 57.60 V T08
2022-09-19 14:53:12 C 04 55 51.245 +40 22 28.88 V T08
2022-09-22 10:05:24 C 04 58 33.29 +41 06 22.8 q U55
2022-09-22 10:21:53 C 04 58 33.84 +41 06 34.4 q U55
2022-09-22 10:40:03 C 04 58 34.49 +41 06 46.2 q U55
2022-09-25 12:26:17 C 05 01 06.739 +41 55 26.00 V T05
2022-09-25 12:30:51 C 05 01 06.862 +41 55 29.24 V T05
2022-09-25 12:35:24 C 05 01 07.001 +41 55 32.23 V T05
2022-09-25 12:55:05 C 05 01 07.560 +41 55 45.55 V T05
2022-09-27 07:26:53 C 05 02 22.20 +42 23 47.6 V U55
2022-09-27 07:34:38 C 05 02 22.41 +42 23 53.2 V U55
2022-09-27 07:42:23 C 05 02 22.62 +42 23 59.1 V U55
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)