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
2021-11-24 12:53:56 S 11 16 04.162 +14 32 03.70 V C57
2021-11-24 12:53:56 s 1 +100664.98 3 +343406.66 9570.0 C57
2021-11-24 15:03:56 S 11 16 18.216 +14 30 15.23 V C57
2021-11-24 15:03:56 s 1 +96564.560 0 +346946.02 1590.0 C57
2021-11-24 15:13:56 S 11 16 19.274 +14 30 10.94 V C57
2021-11-24 15:13:56 s 1 +96247.040 0 +347210.84 5620.0 C57
2021-11-24 15:23:56 S 11 16 20.414 +14 30 06.12 V C57
2021-11-24 15:23:56 s 1 +95929.225 0 +347474.61 8690.0 C57
2021-11-24 15:33:56 S 11 16 21.228 +14 29 55.79 V C57
2021-11-24 15:33:56 s 1 +95611.118 0 +347737.32 810.0 C57
2021-11-24 15:53:56 S 11 16 23.218 +14 29 42.65 V C57
2021-11-24 15:53:56 s 1 +94974.034 0 +348259.56 2200.0 C57
2021-11-24 17:13:56 S 11 16 32.057 +14 28 34.82 V C57
2021-11-24 17:13:56 s 1 +92414.277 0 +350306.33 620.0 C57
2021-11-24 17:23:56 S 11 16 33.103 +14 28 34.03 V C57
2021-11-24 17:23:56 s 1 +92093.045 0 +350557.44 2580.0 C57
2021-11-24 17:33:56 S 11 16 33.876 +14 28 22.80 V C57
2021-11-24 17:33:56 s 1 +91771.537 0 +350807.49 3640.0 C57
2021-11-24 17:43:56 S 11 16 35.273 +14 28 14.16 V C57
2021-11-24 17:43:56 s 1 +91449.755 0 +351056.49 3820.0 C57
2021-11-24 17:53:56 S 11 16 35.861 +14 28 08.76 V C57
2021-11-24 17:53:56 s 1 +91127.699 0 +351304.45 3110.0 C57
2021-11-24 18:03:56 S 11 16 36.972 +14 27 55.55 V C57
2021-11-24 18:03:56 s 1 +90805.370 0 +351551.35 1520.0 C57
2021-11-24 18:13:56 S 11 16 38.364 +14 27 47.23 V C57
2021-11-24 18:13:56 s 1 +90482.771 0 +351797.20 9060.0 C57
2021-11-24 19:33:56 S 11 16 46.519 +14 26 47.87 V C57
2021-11-24 19:33:56 s 1 +87892.387 0 +353726.32 8490.0 C57
2021-11-24 19:53:56 S 11 16 48.857 +14 26 32.93 V C57
2021-11-24 19:53:56 s 1 +87242.174 0 +354198.14 7450.0 C57
2021-11-24 20:03:56 S 11 16 49.529 +14 26 24.04 V C57
2021-11-24 20:03:56 s 1 +86916.681 0 +354432.48 5700.0 C57
2021-11-24 20:13:56 S 11 16 51.074 +14 26 21.37 V C57
2021-11-24 20:13:56 s 1 +86590.934 0 +354665.79 3130.0 C57
2021-11-24 20:23:56 S 11 16 51.708 +14 26 10.18 V C57
2021-11-24 20:23:56 s 1 +86264.932 0 +354898.04 9750.0 C57
2021-11-24 20:33:56 S 11 16 52.709 +14 26 01.93 V C57
2021-11-24 20:33:56 s 1 +85938.678 0 +355129.26 5560.0 C57
2021-11-24 20:53:56 S 11 16 54.917 +14 25 39.68 V C57
2021-11-24 20:53:56 s 1 +85285.416 0 +355588.57 4790.0 C57
2021-11-24 21:03:56 S 11 16 56.191 +14 25 32.99 V C57
2021-11-24 21:03:56 s 1 +84958.411 0 +355816.66 8210.0 C57
2021-11-24 21:13:56 S 11 16 56.971 +14 25 28.88 V C57
2021-11-24 21:13:56 s 1 +84631.158 0 +356043.72 840.0 C57
2021-11-24 21:23:56 S 11 16 58.385 +14 25 23.48 V C57
2021-11-24 21:23:56 s 1 +84303.659 0 +356269.73 2700.0 C57
2021-11-24 22:23:56 S 11 17 04.483 +14 24 31.43 V C57
2021-11-24 22:23:56 s 1 +82333.556 0 +357604.00 7630.0 C57
2021-11-24 22:53:56 S 11 17 08.023 +14 24 12.67 V C57
2021-11-24 22:53:56 s 1 +81345.277 0 +358257.14 4910.0 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)