[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .2951920177900683 | 3.9785e-08 | |
a | 2.313229836248239 | 4.7202e-09 | au |
q | 1.630382853273932 | 9.2255e-08 | au |
i | 2.386444978203675 | 3.6782e-06 | deg |
node | 222.9544386320435 | 7.2583e-05 | deg |
peri | 170.892759695719 | 7.29e-05 | deg |
M | 159.9993565765703 | 5.812e-06 | deg |
tp | 2458629.360311761128 (2019-May-25.86031176) | 1.9977e-05 | TDB |
period | 1285.069466311234 3.52 | 3.9333e-06 1.077e-08 | d yr |
n | .2801404977999927 | 8.5745e-10 | deg/d |
Q | 2.996076819222546 | 6.1136e-09 | 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 |
15.05 |
|
n/a |
E2021B10 |
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rotation period |
rot_per |
5.17 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Warner, B.D. (2002) Minor Planet Bull. 29, 27-28.] [Warner, B.D. (2011) Minor Planet Bull. 38, 63-65.] |
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7816 Hanoi | Discovered 1987 Dec. 18 by M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory. |
Named for the capital of Vietnam. The discoverer visited the city in 1997 with Yoshihide Kozai to help Vietnamese astronomers install a 0.40-m Schmidt Cassegrain telescope with a CCD camera and a 0.10-m refractor. The equipment, installed at the National Pedagogical University, was obtained using funds from the Sumitomo Foundations, Japan, with the hope that astronomical research in Vietnam will thereby be promoted. |
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
Reference: 19990202/MPCPages.arc | Last Updated: 2010-06-11 |
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