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
2021-11-23 02:53:56 S 11 12 27.751 +14 58 30.47 V C57
2021-11-23 02:53:56 s 1 +155647.73 0 +263144.54 9310.0 C57
2021-11-23 03:03:56 S 11 12 28.630 +14 58 15.06 V C57
2021-11-23 03:03:56 s 1 +155436.36 9 +263658.26 8450.0 C57
2021-11-23 03:13:56 S 11 12 29.546 +14 58 12.04 V C57
2021-11-23 03:13:56 s 1 +155224.25 9 +264170.72 4950.0 C57
2021-11-23 05:13:56 S 11 12 42.706 +14 56 37.46 V C57
2021-11-23 05:13:56 s 1 +152621.69 1 +270222.25 1550.0 C57
2021-11-23 05:23:56 S 11 12 43.824 +14 56 32.57 V C57
2021-11-23 05:23:56 s 1 +152400.13 6 +270718.42 4830.0 C57
2021-11-23 05:33:56 S 11 12 44.890 +14 56 21.59 V C57
2021-11-23 05:33:56 s 1 +152177.87 6 +271213.35 5640.0 C57
2021-11-23 05:53:56 S 11 12 46.867 +14 56 04.92 V C57
2021-11-23 05:53:56 s 1 +151731.25 4 +272199.47 9880.0 C57
2021-11-23 07:13:56 S 11 12 55.507 +14 55 04.01 V C57
2021-11-23 07:13:56 s 1 +149917.18 0 +276094.48 40.0 C57
2021-11-23 07:33:56 S 11 12 57.578 +14 54 53.03 V C57
2021-11-23 07:33:56 s 1 +149456.88 3 +277055.91 6320.0 C57
2021-11-23 07:43:56 S 11 12 58.548 +14 54 44.06 V C57
2021-11-23 07:43:56 s 1 +149225.73 3 +277534.78 5950.0 C57
2021-11-23 07:53:56 S 11 12 59.839 +14 54 36.68 V C57
2021-11-23 07:53:56 s 1 +148993.92 0 +278012.43 3250.0 C57
2021-11-23 08:03:56 S 11 13 00.545 +14 54 29.99 V C57
2021-11-23 08:03:56 s 1 +148761.44 7 +278488.85 8250.0 C57
2021-11-23 08:13:56 S 11 13 01.889 +14 54 20.05 V C57
2021-11-23 08:13:56 s 1 +148528.31 6 +278964.05 940.0 C57
2021-11-23 08:33:56 S 11 13 03.751 +14 54 06.91 V C57
2021-11-23 08:33:56 s 1 +148060.09 1 +279910.78 9450.0 C57
2021-11-23 08:43:56 S 11 13 05.011 +14 53 56.80 V C57
2021-11-23 08:43:56 s 1 +147825.00 3 +280382.31 5290.0 C57
2021-11-23 09:53:56 S 11 13 12.950 +14 53 07.08 V C57
2021-11-23 09:53:56 s 1 +146161.43 7 +283648.99 3410.0 C57
2021-11-23 10:13:56 S 11 13 14.354 +14 52 46.78 V C57
2021-11-23 10:13:56 s 1 +145680.44 4 +284571.42 7280.0 C57
2021-11-23 10:23:56 S 11 13 15.718 +14 52 44.90 V C57
2021-11-23 10:23:56 s 1 +145439.01 2 +285030.82 960.0 C57
2021-11-23 10:33:56 S 11 13 16.829 +14 52 32.84 V C57
2021-11-23 10:33:56 s 1 +145196.96 1 +285489.01 2460.0 C57
2021-11-23 10:43:56 S 11 13 18.079 +14 52 24.89 V C57
2021-11-23 10:43:56 s 1 +144954.29 3 +285946.00 1820.0 C57
2021-11-23 11:03:56 S 11 13 20.030 +14 52 07.57 V C57
2021-11-23 11:03:56 s 1 +144467.11 7 +286856.37 4100.0 C57
2021-11-24 12:13:56 S 11 16 00.365 +14 32 31.92 V C57
2021-11-24 12:13:56 s 1 +101916.14 6 +342281.41 1320.0 C57
2021-11-24 12:23:56 S 11 16 01.406 +14 32 27.92 V C57
2021-11-24 12:23:56 s 1 +101603.83 0 +342564.33 2450.0 C57
2021-11-24 12:33:56 S 11 16 02.328 +14 32 19.93 V C57
2021-11-24 12:33:56 s 1 +101291.19 7 +342846.17 2530.0 C57
2021-11-24 12:43:56 S 11 16 03.331 +14 32 08.41 V C57
2021-11-24 12:43:56 s 1 +100978.24 7 +343126.95 1570.0 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)