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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 31 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .08216473003200031 | 3.7173e-08 | |
| a | 2.278523171332118 | 6.5121e-09 | au |
| q | 2.091308930087957 | 8.4716e-08 | au |
| i | 5.321423338226114 | 3.3644e-06 | deg |
| node | 89.20046298370885 | 4.5123e-05 | deg |
| peri | 249.2993707478403 | 5.0915e-05 | deg |
| M | 267.5644478113862 | 2.4954e-05 | deg |
| tp | 2459523.063438694001
(2021-Nov-04.56343869) | 8.7355e-05 | TDB |
| period | 1256.257307717412
3.44 | 5.3856e-06
1.474e-08 | d
yr |
| n | .2865654972022498 | 1.2285e-09 | deg/d |
| Q | 2.465737412576278 | 7.0472e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.44 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
5.269 |
km |
0.042 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
5.062 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Stephens R.D. (2017) Minor Planet Bull. 44, 321-323.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
| geometric albedo |
albedo |
0.349 |
|
0.029 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 6921 Janejacobs | Discovered 1993 May 14 by S. Ueda and H. Kaneda at Kushiro. |
| Having moved to New York City during the Depression, Jane Jacobs (1916-2006) was way ahead of her time in championing the idea that cities are more important than nations in the "real economic world". Cities should not be laboratories for ill-placed expressways and housing projects but left to develop by themselves. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20060613/MPCPages.arc | Last Updated: 2008-05-22 |
|
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Alternate Designations
| 1993 JJ = 1976 MB = 1977 XV2 = 1980 TU1 = 1984 YN = 1987 SH22 = 1990 HE2 = 1990 MV1 = 1992 BF5 |
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