[ hide orbit diagram ]
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.
[ revert to old Java-based viewer ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 73 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1557370980868938 | 3.8789e-08 | |
a | 2.448988548113453 | 6.2205e-09 | au |
q | 2.067590178382229 | 9.5085e-08 | au |
i | 1.816627809425122 | 3.9425e-06 | deg |
node | 23.17922774843889 | 9.7693e-05 | deg |
peri | 333.5414234888295 | 9.8221e-05 | deg |
M | 162.7003316586218 | 1.1703e-05 | deg |
tp | 2457967.848567449789 (2017-Aug-02.34856745) | 4.5349e-05 | TDB |
period | 1399.840512900435 3.83 | 5.3335e-06 1.46e-08 | d yr |
n | .2571721540292393 | 9.7984e-10 | deg/d |
Q | 2.830386917844678 | 7.1893e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
10.23 |
|
n/a |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 6 |
diameter |
diameter |
34.792 |
km |
0.575 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
rotation period |
rot_per |
4.623 |
h |
n/a |
LCDB (Rev. 2019-January); Warner et al., 2009 |
Published Reference List: [Barucci, M.A.; Di Martino, M.; Fulchignoni, M. (1992) Astron. J. 103, 1679-1686.] [Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; et al. (1998) Astron. Astrophys. Suppl. Ser. 128, 525-540.] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.] [Lang, K.; Jacobsen, J.; Kristensen, L.H.; Larsen, F.R. (2018) Minor Planet Bull. 45, 197-198.] |
geometric albedo |
albedo |
0.118 |
|
0.017 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
B-V |
BV |
0.709 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=7.29, mean=7.98, max.=8.56) deg. |
U-B |
UB |
0.280 |
|
0.082 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=3; phase (min.=7.29, mean=7.98, max.=8.56) deg. |
Tholen spectral type |
spec_T |
DCX |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 2 color indices |
|
435 Ella (A898 RA) Discovered 1898-Sep-11 by Wolf, M. and Schwassmann, A. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
|