2007 DT103
compiled by Wm. Robert Johnston
last updated 13 January 2009
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
2.211734 AU
| |
orbital period P: |
3.29 y (=1,201.428 d)
| |
eccentricity e: |
0.5745141
| |
perihelion distance q: |
0.94106169 AU
| |
aphelion distance Q: |
3.482407 AU
| |
inclination i: |
5.419047°
| |
argument of perihelion omega: |
133.98659°
| |
ascending node OMEGA: |
137.27092°
| |
mean anomaly M: |
335.11288°
| |
perihelion passage TP: |
2007-07-02.055807
| |
Epoch: |
10 APR 2007
| |
data arc: |
169 days (625 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
>=0.45 km [I8866]
| |
semimajor axis/primary radius a/Rp: |
(3)
| |
orbital period P: |
(~12 h?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
300 m [I8866]
| |
absolute magnitude H: |
19.174 ± 0.765 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
?
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(~0.4)
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
>80 m [I8866]
| |
diameter ratio Ds/Dp: |
(~0.26)
| |
component magnitude difference: |
(~2.8)
| |
rotation period: |
?
|
|
--2007 DT103--discovery and notes:
Primary discovered 2007.
Companion discovered by L. A. M. Benner, S. J. Ostro, J. D. Giorgini, J. Van Brimmer, L. Juare, J. S. Jao, R. F. Jurgens, and M. A. Slade from Goldstone radar observations obtained 26 July to 1 August 2007; reported 3 August 2007.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2007, 2009 by Wm. Robert Johnston.
Last modified 13 January 2009.
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