[ 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.
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1312921429918446 | 2.0217e-08 | |
| a | 2.362136946652476 | 6.0404e-09 | au |
| q | 2.05200692488626 | 4.8259e-08 | au |
| i | 2.919126905360683 | 6.4979e-07 | deg |
| node | 187.718982553853 | 1.1938e-05 | deg |
| peri | 310.7779874435575 | 1.2823e-05 | deg |
| M | 42.86801742063897 | 7.1155e-06 | deg |
| tp | 2459238.598253559270
(2021-Jan-24.09825356) | 2.6108e-05 | TDB |
| period | 1326.038201414347
3.63 | 5.0864e-06
1.393e-08 | d
yr |
| n | .2714853913077508 | 1.0414e-09 | deg/d |
| Q | 2.672266968418692 | 6.8335e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.00 |
|
n/a |
MPO614063 |
|
| diameter |
diameter |
5.491 |
km |
0.032 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
7.57860 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] |
| geometric albedo |
albedo |
0.213 |
|
0.024 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 9869 Yadoumaru | Discovered 1992 Feb. 9 by K. Endate and K. Watanabe at Kitami. |
| Yasushi Yadoumaru (b. 1965) is a research fellow at the Misato Observatory. His primary field of study is spectroscopic observations of planetary nebulae. His doctoral dissertation was on the evolution of planetary nebulae, focusing on their expansion velocities. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20030106/MPCPages.arc | Last Updated: 2003-10-02 |
|
Alternate Designations
| 1992 CD1 = 1952 DJ1 = 1996 HL15 |
|
|
