1580 Betulia (1950 KA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4876047101 ± 2.00e+00
Semi-major axis (a)2.1949743206 AU ± 3.00e+00
Inclination (i)52.18777815° ± 4.00e+00
Long. of Asc. Node (Ω)62.22480892° ± 5.00e+00
Arg. of Perihelion (ω)159.71713922° ± 6.00e+00
Mean Anomaly (M)80.26713945° ± 3.89e-05
Mean Motion (n)0.3030875594°/day ± 6.21e-01
Perihelion dist (q)1.12469450 AU ± 4.65e+00
Aphelion dist (Q)3.26525414 AU ± 6.26e+00
Orbital Period3.25195229 yr ± 6.67e+00
NGA Modelr2
A21.40142724e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.282″
Uncertainty0
Orbit TypeAmor
MOID0.133321 AU
Observations Used1981
Radar Obs Used10
Gaia Obs Used93
Oppositions46
Arc Total1950-2016
First Observation Used1950-05-22
Last Observation Used2025-12-13
Observations (2056)
Date Type RA Dec Mag Band Observatory
2018-06-23 06:31:14 C 09 35 19.63 +52 18 17.1 U T05
2018-06-23 06:41:56 C 09 35 21.70 +52 18 04.5 U T05
2018-06-23 06:45:20 C 09 35 22.32 +52 18 00.0 U T05
2018-06-23 06:56:01 C 09 35 24.36 +52 17 47.4 U T05
2018-06-23 06:59:24 C 09 35 24.94 +52 17 43.2 U T05
2018-06-23 07:14:48 C 09 35 27.89 +52 17 24.9 U T05
2018-07-01 06:18:16 C 10 10 08.22 +48 07 11.5 U T05
2018-07-01 06:28:41 C 10 10 10.01 +48 06 56.5 U T05
2018-07-01 06:44:09 C 10 10 12.71 +48 06 34.1 U T05
2018-07-01 06:51:51 C 10 10 13.97 +48 06 23.0 U T05
2018-07-16 06:15:01 C 11 07 16.11 +38 17 51.8 U T05
2018-07-16 06:28:21 C 11 07 17.99 +38 17 27.6 U T05
2018-07-16 06:44:24 C 11 07 20.36 +38 16 58.4 U T05
2018-07-16 06:59:35 C 11 07 22.56 +38 16 30.0 U T05
2018-07-17 06:06:47 C 11 10 42.00 +37 34 05.2 U T05
2018-07-17 06:15:41 C 11 10 43.29 +37 33 50.0 U T05
2018-07-17 06:27:50 C 11 10 45.05 +37 33 26.6 U T05
2018-07-17 06:42:10 C 11 10 47.08 +37 33 00.5 U T05
2019-10-23 11:15:08 C 03 16 44.05 -28 45 30.7 V T08
2019-10-23 11:19:47 C 03 16 43.76 -28 45 30.5 V T08
2019-10-23 11:31:03 C 03 16 43.05 -28 45 31.5 V T08
2019-10-23 11:52:39 C 03 16 41.69 -28 45 31.4 V T08
2019-10-25 11:12:01 C 03 13 45.40 -28 46 04.0 V T05
2019-10-25 11:19:32 C 03 13 44.93 -28 46 04.0 V T05
2019-10-25 11:40:19 C 03 13 43.64 -28 46 04.0 V T05
2019-10-25 11:44:16 C 03 13 43.38 -28 46 04.2 V T05
2019-10-27 11:14:12 C 03 10 44.04 -28 45 16.3 V T08
2019-10-27 11:19:32 C 03 10 43.67 -28 45 16.5 V T08
2019-10-27 11:29:48 C 03 10 42.98 -28 45 17.2 V T08
2019-10-27 11:49:43 C 03 10 41.64 -28 45 13.6 V T08
2019-10-29 08:26:24 C 03 07 51.65 -28 43 15.8 o 691
2019-10-29 08:38:06 C 03 07 50.90 -28 43 15.1 o 691
2019-10-29 08:49:48 C 03 07 50.13 -28 43 14.5 o 691
2019-10-31 10:16:18 C 03 04 40.66 -28 39 36.7 V T08
2019-10-31 10:21:03 C 03 04 40.33 -28 39 37.0 V T08
2019-10-31 10:38:58 C 03 04 39.16 -28 39 34.7 V T08
2019-10-31 10:46:22 C 03 04 38.70 -28 39 34.7 V T08
2019-11-24 10:53:19 C 02 29 55.68 -26 10 18.3 V T08
2019-11-24 10:58:39 C 02 29 55.38 -26 10 15.7 V T08
2019-11-24 11:08:47 C 02 29 54.89 -26 10 12.8 V T08
2019-11-24 11:23:31 C 02 29 54.11 -26 10 05.6 V T08
2019-12-10 08:40:46 C 02 13 15.023 -23 04 11.22 U F52
2019-12-10 08:54:44 C 02 13 14.524 -23 04 03.31 U F52
2019-12-10 09:08:40 C 02 13 14.038 -23 03 55.84 U F52
2019-12-10 09:22:44 C 02 13 13.544 -23 03 48.36 U F52
2020-09-27 09:58:58 C 05 21 21.63 +23 39 54.9 V G96
2020-09-27 10:06:28 C 05 21 21.63 +23 39 57.1 V G96
2020-09-27 10:13:58 C 05 21 21.65 +23 39 59.4 V G96
2020-09-27 10:21:27 C 05 21 21.65 +23 40 02.1 V G96
2020-10-13 10:20:00 C 05 18 19.44 +25 50 47.1 V G96
Radar Observations (22)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1976-05-18 05:56:50 225980 7 Hz 2380 -1 -1
1976-05-18.247801 22598000 100 Hz 2380 251 251
1976-05-19 05:52:16 186012.5 7 Hz 2380 -1 -1
1976-05-19.244630 18601250 100 Hz 2380 251 251
1989-05-23 12:00:00 501134 20 Hz 8495 -14 -14
1989-05-23.500000 50113400 2000 Hz 8495 253 253
1989-05-26 01:42:00 185537450 12 us 2380 -1 -1
1989-05-26.070833 18553745000 12000 us 2380 251 251
1989-05-28 01:38:00 185094484 12 us 2380 -1 -1
1989-05-28.068056 18509448400 12000 us 2380 251 251
1989-05-29 00:20:00 -72175 5 Hz 2380 -1 -1
1989-05-29.013889 -7217500 500 Hz 2380 251 251
2002-05-28.997222 23747341100 10000 us 2380 251 251
2002-05-30 01:10:00 237420023 2 us 2380 -1 -1
2002-05-30 01:10:00 -16023.93 1 Hz 2380 -1 -1
2002-05-30.048611 23742002300 2000 us 2380 251 251
2002-06-01 00:57:00 240888928 2 us 2380 -1 -1
2002-06-01 00:57:00 -80205.3478 1 Hz 2380 -1 -1
2002-06-01.039583 24088892800 2000 us 2380 251 251
2002-06-03 00:09:00 248731233 2 us 2380 -1 -1
2002-06-03 00:09:00 -138436.315 1 Hz 2380 -1 -1
2002-06-03.006250 24873123300 2000 us 2380 251 251
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)