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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 54 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1710624580722217 | 1.8779e-08 | |
a | 3.182554968993197 | 8.8707e-09 | au |
q | 2.638139293047257 | 5.6985e-08 | au |
i | 22.66984643034806 | 5.0198e-07 | deg |
node | 200.4818039242899 | 2.0908e-06 | deg |
peri | 188.5769285453837 | 4.3002e-06 | deg |
M | 82.5251796775654 | 5.9487e-06 | deg |
tp | 2458725.114123446948 (2019-Aug-29.61412345) | 3.3097e-05 | TDB |
period | 2073.778163558767 5.68 | 8.6703e-06 2.374e-08 | d yr |
n | .1735961957388015 | 7.2579e-10 | deg/d |
Q | 3.726970644939136 | 1.0388e-08 | au |
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| | 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 |
8.29 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
106.976 |
km |
1.080 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
11.2877 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Hansen, A.T.; Arentoft, T. (1997) Minor Planet Bull. 24, 14.] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Alton, K.B. (2008) Minor Planet Bull. 35, 53.] [Krajewski, R. (2008) Minor Planet Bull. 35, 77.] [Warner, B.D. (2008) Minor Planet Bull. 35, 56-60.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Shevchenko, V.G.; Belksaya, I.N.; Muinon, K.; Penttila, A.; et al. (2016) Plan. Space Sci. 123, 101-116.] [Oey, J.; Williams, H.; Groom, R. (2017) Minor Planet Bull. 44, 200-204.] [Benishek, V. (2018) Minor Planet Bull. 45, 82-91.] [Durech, J.; Hanus, J.; Broz, M.; Lehky, M.; et al. (2017) Icarus 304, 101-109.] [Wang, Y.-B.; Xu, Y.; Fan, C.-B.; Liu, C.-Z. (2018). Astron. Nach. 339, 457-464.] |
geometric albedo |
albedo |
0.065 |
|
0.023 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N) |
|
Tholen spectral type |
spec_T |
G |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a medium resolution spectrum published by Chapman and Gaffey (1979) |
SMASSII spectral type |
spec_B |
Ch |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
176 Iduna (A877 TB) Discovered 1877-Oct-14 by Peters, C. H. F. at Clinton |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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