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
2010-11-10 07:58:35 C 04 14 29.11 +15 35 57.3 c 704
2010-11-10 08:16:55 C 04 14 28.01 +15 36 00.8 c 704
2010-11-10 08:53:51 C 04 14 25.83 +15 36 07.9 c 704
2010-11-10 09:12:16 C 04 14 24.73 +15 36 11.4 c 704
2010-11-15 07:13:42 C 04 07 18.87 +15 57 59.4 r 703
2010-11-15 07:21:05 C 04 07 18.30 +15 58 00.0 r 703
2010-11-15 07:28:31 C 04 07 17.86 +15 58 01.5 r 703
2010-11-15 07:35:59 C 04 07 17.36 +15 58 02.5 r 703
2010-11-25 06:36:25 C 03 52 04.40 +16 42 16.0 r G96
2010-11-25 06:41:31 C 03 52 04.08 +16 42 16.8 r G96
2010-11-25 06:46:41 C 03 52 03.75 +16 42 17.8 r G96
2010-11-25 06:51:51 C 03 52 03.39 +16 42 18.7 r G96
2010-12-01 04:30:32 C 03 42 54.18 +17 08 16.1 r G96
2010-12-01 04:40:20 C 03 42 53.49 +17 08 17.5 r G96
2010-12-01 04:50:07 C 03 42 52.88 +17 08 19.3 r G96
2010-12-01 04:59:52 C 03 42 52.23 +17 08 21.1 r G96
2010-12-02 22:26:34 C 03 40 13.29 +17 15 52.8 18.5 c A77
2010-12-02 22:55:49 C 03 40 11.36 +17 15 58.3 18.3 c A77
2010-12-02 23:25:03 C 03 40 09.43 +17 16 04.1 18.6 c A77
2010-12-03 06:25:11 C 03 39 42.76 +17 17 20.9 c 704
2010-12-03 06:44:18 C 03 39 41.47 +17 17 24.5 c 704
2010-12-03 07:03:24 C 03 39 40.26 +17 17 28.1 c 704
2010-12-03 07:22:31 C 03 39 38.96 +17 17 31.7 c 704
2010-12-03 07:42:16 C 03 39 37.79 +17 17 34.5 c 704
2010-12-04 06:18:36 C 03 38 11.95 +17 21 40.4 u H45
2010-12-04 06:20:41 C 03 38 11.78 +17 21 40.9 u H45
2010-12-04 06:22:49 C 03 38 11.68 +17 21 41.1 u H45
2010-12-04 06:26:34 C 03 38 11.44 +17 21 42.6 u H45
2010-12-04 06:28:39 C 03 38 11.28 +17 21 42.7 u H45
2010-12-13 03:21:33 C 03 25 17.99 +18 00 06.4 c 704
2010-12-13 03:40:19 C 03 25 16.88 +18 00 09.6 c 704
2010-12-13 03:59:22 C 03 25 15.86 +18 00 12.7 c 704
2010-12-13 04:14:52 C 03 25 14.91 +18 00 15.0 r G96
2010-12-13 04:18:11 C 03 25 14.72 +18 00 16.6 c 704
2010-12-13 04:22:24 C 03 25 14.48 +18 00 16.3 r G96
2010-12-13 04:30:03 C 03 25 14.05 +18 00 17.7 r G96
2010-12-13 04:37:06 C 03 25 13.62 +18 00 20.3 c 704
2010-12-13 04:37:37 C 03 25 13.58 +18 00 19.1 r G96
2010-12-29 03:45:58 C 03 06 18.75 +19 10 17.3 r 703
2010-12-29 03:55:54 C 03 06 18.39 +19 10 18.6 r 703
2010-12-29 04:05:47 C 03 06 17.96 +19 10 20.4 r 703
2011-01-05 03:51:33 C 03 00 15.52 +19 42 31.5 c 704
2011-01-05 04:10:24 C 03 00 14.92 +19 42 35.2 c 704
2011-01-05 04:29:13 C 03 00 14.27 +19 42 38.2 c 704
2011-01-05 04:47:53 C 03 00 13.74 +19 42 41.6 c 704
2011-01-11 02:53:25 C 02 56 17.37 +20 11 17.8 r 703
2011-01-11 03:01:03 C 02 56 17.12 +20 11 19.3 r 703
2011-01-11 03:08:35 C 02 56 16.90 +20 11 20.4 r 703
2011-01-11 03:16:04 C 02 56 16.72 +20 11 21.7 r 703
2011-02-07 04:21:02 C 02 51 09.61 +22 41 51.0 r 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)