2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2021-09-16 12:01:09 C 08 10 25.27 +19 11 49.3 V 703
2021-09-16 12:06:34 C 08 10 26.53 +19 11 50.1 U I41
2021-09-16 12:10:14 C 08 10 27.47 +19 11 50.5 U I41
2021-09-16 12:13:52 C 08 10 28.43 +19 11 50.8 U I41
2021-09-16 12:17:32 C 08 10 29.39 +19 11 51.1 U I41
2021-09-16 12:21:11 C 08 10 30.34 +19 11 51.4 U I41
2021-09-21 12:06:19 C 08 41 21.05 +19 06 39.1 U I41
2021-09-21 12:09:55 C 08 41 21.95 +19 06 38.6 U I41
2021-09-21 12:13:30 C 08 41 22.85 +19 06 38.1 U I41
2021-09-21 12:17:03 C 08 41 23.74 +19 06 37.6 U I41
2021-09-21 12:20:38 C 08 41 24.61 +19 06 37.1 U I41
2021-09-26 12:15:55 C 09 10 50.12 +18 35 37.4 U I41
2021-09-26 12:19:28 C 09 10 50.96 +18 35 36.3 U I41
2021-09-26 12:23:00 C 09 10 51.81 +18 35 35.0 U I41
2021-09-26 12:26:34 C 09 10 52.64 +18 35 33.7 U I41
2021-09-27 12:18:14 C 09 16 33.19 +18 26 32.5 U I41
2021-09-27 12:21:46 C 09 16 34.00 +18 26 31.1 U I41
2021-09-27 12:25:17 C 09 16 34.84 +18 26 29.8 U I41
2021-09-27 12:28:49 C 09 16 35.66 +18 26 28.4 U I41
2021-09-27 12:32:21 C 09 16 36.49 +18 26 27.1 U I41
2021-09-28 12:27:12 C 09 22 14.22 +18 16 30.1 U I41
2021-10-01 12:14:24 C 09 38 46.64 +17 41 30.0 U I41
2021-10-01 12:17:59 C 09 38 47.45 +17 41 28.1 U I41
2021-10-01 12:21:34 C 09 38 48.25 +17 41 26.4 U I41
2021-10-01 12:25:09 C 09 38 49.08 +17 41 24.4 U I41
2021-10-01 12:28:43 C 09 38 49.89 +17 41 22.5 U I41
2021-10-14 12:40:37 C 10 45 00.45 +13 53 03.0 U I41
2021-10-14 12:44:01 C 10 45 01.13 +13 53 00.1 U I41
2021-10-14 12:47:26 C 10 45 01.80 +13 52 57.1 U I41
2021-10-14 12:54:14 C 10 45 03.14 +13 52 50.9 U I41
2021-10-17 12:01:55 C 10 58 57.81 +12 47 03.0 V 703
2021-10-17 12:07:53 C 10 58 58.92 +12 46 56.1 V 703
2021-10-17 12:13:51 C 10 59 00.11 +12 46 51.0 V 703
2021-10-17 12:19:49 C 10 59 01.27 +12 46 45.4 V 703
2021-10-30 12:51:27 C 11 56 02.04 +07 19 44.5 U I41
2021-10-30 12:54:52 C 11 56 02.63 +07 19 40.6 U I41
2021-10-30 12:58:18 C 11 56 03.22 +07 19 36.9 U I41
2021-10-30 13:01:42 C 11 56 03.80 +07 19 33.0 U I41
2021-10-30 13:05:06 C 11 56 04.39 +07 19 29.3 U I41
2021-10-31 12:52:22 C 12 00 10.33 +06 52 56.7 U I41
2021-10-31 12:55:47 C 12 00 10.90 +06 52 52.9 U I41
2021-10-31 12:59:11 C 12 00 11.49 +06 52 49.2 U I41
2021-10-31 13:02:35 C 12 00 12.07 +06 52 45.4 U I41
2021-10-31 13:06:00 C 12 00 12.65 +06 52 41.6 U I41
2021-12-02 13:21:24 C 13 59 22.54 -07 08 11.9 U I41
2021-12-02 13:24:48 C 13 59 23.02 -07 08 15.1 U I41
2021-12-02 13:28:12 C 13 59 23.50 -07 08 18.4 U I41
2021-12-02 13:31:37 C 13 59 23.99 -07 08 21.6 U I41
2022-05-26 07:40:49 C 21 38 00.161 -30 39 52.63 V W68
2022-05-26 07:59:31 C 21 38 01.421 -30 39 58.90 V W68
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)