(3309) Brorfelde
compiled by Wm. Robert Johnston
last updated 6 December 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: |
1.8176343 AU
| |
orbital period P: |
2.4506 y (=895.3 d)
| |
eccentricity e: |
0.0532123
| |
perihelion distance q: |
1.7209138 AU
| |
aphelion distance Q: |
1.91435480 AU
| |
inclination i: |
21.13717°
| |
argument of perihelion omega: |
218.45858°
| |
ascending node OMEGA: |
29.86218°
| |
mean anomaly M: |
106.55058°
| |
perihelion passage TP: |
2004-11-26.0819833
| |
Epoch: |
18 AUG 2005
| |
data arc: |
1982-2003 (187 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(12 km?)
| |
semimajor axis/primary radius a/Rp: |
(4?)
| |
orbital period P: |
18.48 ± 0.01 h [C279]
18.45 ± 0.01 h [W09c]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(7 km?)
| |
absolute magnitude H: |
13.9 [JPL]
13.4 ± 0.2 [C279]
| |
rotation period: |
2.5041 ± 0.0002 [C279]
| |
amplitude delta M: |
0.09; 0.07-0.15 [C279]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.20) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(1.7 km?)
| |
diameter ratio Ds/Dp: |
0.26 ± 0.02 [C279]
| |
component magnitude difference: |
(2.9)
| |
rotation period: |
18.45 ± 0.01 h [W09c]
|
|
--(3309) Brorfelde--discovery and notes:
Primary discovered 28 January 1982 from Brorfelde, Denmark, by K. S. Jensen.
Secondary identified by B. D. Warner, P. Pravec, P. Kusnirak, W. Cooney, J. Gross, D. Terrell, and S. Nudds based on lightcurve observations from 25 October-3 November 2005; reported 7 November 2005.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2005-2008, 2009 by Wm. Robert Johnston.
Last modified 6 December 2009.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.