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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .06022328934076153 | 3.3584e-08 | |
| a | 2.869965573119101 | 9.9757e-09 | au |
| q | 2.697126806011125 | 9.6459e-08 | au |
| i | 2.54411336363585 | 3.7991e-06 | deg |
| node | 40.80213954346419 | 7.9368e-05 | deg |
| peri | 15.12253837183671 | 8.5358e-05 | deg |
| M | 78.21363303482664 | 3.0456e-05 | deg |
| tp | 2458814.672289164758
(2019-Nov-27.17228916) | 0.00015039 | TDB |
| period | 1775.879351350925
4.86 | 9.2591e-06
2.535e-08 | d
yr |
| n | .2027164737999489 | 1.0569e-09 | deg/d |
| Q | 3.042804340227077 | 1.0576e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.56 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
22.783 |
km |
0.213 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
7.81 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Slivan, S.M.; Binzel, R.P. (1996) Icarus 124, 452-470.]
[Michalowski, T.; Pych, W.; Berthier, J.; Kryszczynska, A.; et al. (2000) Astron. Astrophys. Suppl. Ser. 146, 471-479.]
[Slivan, S.M.; Binzel, R.P.; Crespo da Silva, L.D.; Kaasalainen, M.; et al. (2003) Icarus 162, 285-307.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] |
| geometric albedo |
albedo |
0.170 |
|
0.012 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.840 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=16.54, mean=16.54, max.=16.54) deg. |
| U-B |
UB |
0.405 |
|
0.092 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=16.54, mean=16.54, max.=16.54) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices; used ground-based radiometric albedo |
|
| 1223 Neckar (1931 TG) Discovered 1931-Oct-06 by Reinmuth, K. at Heidelberg |
| Independent discovery Oct. 11 by F. Rigaux, Uccle, was announced first. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| 1931 TG = 1930 MN = 1931 TA1 = 1953 FC = A907 VD = A909 BD = A917 XC = A917 YA |
|
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