2002 CE26
compiled by Wm. Robert Johnston
last updated 5 March 2007
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: |
2.23285175808571 AU
| |
orbital period P: |
3.3366 y (=1218.7 d)
| |
eccentricity e: |
0.559143980149277
| |
perihelion distance q: |
0.984366138986359 AU
| |
aphelion distance Q: |
3.48133738 AU
| |
inclination i: |
47.357261401879°
| |
argument of perihelion omega: |
227.946148353111°
| |
ascending node OMEGA: |
162.043273302849°
| |
mean anomaly M: |
31.959678897013°
| |
perihelion passage TP: |
2004-10-13.8097388
| |
Epoch: |
30 JAN 2005
| |
data arc: |
2001-2005 (889 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
4.7±0.2 km [S06c]
| |
semimajor axis/primary radius a/Rp: |
(2.7)
| |
orbital period P: |
15.6±0.1 h [S06c]
| |
eccentricity e: |
0.00±0.02 [S06c]
| |
inclination i: |
0-45° [S06c]
| |
other data, primary:
|
mean diameter: |
3.46 km ± 0.35 km [S06c]
| |
dimensions: |
3.65 km x 3.65 km x 3.26 km (±0.35 km) [S06c]
| |
absolute magnitude H: |
16.46 [JPL]
| |
rotation period: |
3.2931 ± 0.0003 h [S06c]
| |
rotation pole: |
317°±10°, -20°±15° [S06c]
| |
amplitude delta M: |
0.06 [S06c]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
0.25 [S06c]
| |
geometric albedo: |
0.07 [S06c]
| |
volume: |
21.7 ± 0.65 km3 [S06c]
| |
mass: |
(1.95±0.25)x1013 kg [S06c]
| |
density: |
0.9 +0.5/-0.4 g/cm3 [S06c]
| |
type: |
?
|
other data, secondary:
|
diameter: |
0.3±0.1 km [S06c]
| |
diameter ratio Ds/Dp: |
0.09 [S06c]
| |
component magnitude difference: |
(5.2)
| |
rotation period: |
<=37 h; 15+11/-7 h [S06c]
|
|
--2002 CE26--discovery and notes:
Primary discovered by LINEAR on 10 February 2002, but linked to observations from 2001.
Companion discovered in radar observations 30-31 August 2004 from Arecibo Radio Observatory, Puerto Rico, by M. K. Shepard, J. Schlieder, M. C. Nolan, A. A. Hine, L. A. M. Benner, S. J. Ostro, and J. D. Giorgini. They also report that a possible third component appears in radar images from 31 August, but observations were too limited to confirm it or determine an orbit.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Shepard, Michael K., Margot, Jean-Luc, Magri, Christopher, Nolan, Michael C., Schlieder, Joshua, Estes, Benjamin, Bus, Schelte J., Volquardsen, Eric L., Rivkin, Andrew S., Benner, Lance A. M., Giorgini, Jon D., Ostro, Steven J., & Busch, Michael W. 2006, Icarus Radar and infrared observations of binary near-Earth Asteroid 2002 CE26
- Schlieder, J. E., Shepard, M. K., Nolan, M., Benner, L. A. M., Ostro, S. J., Giorgini, J. D., & Margot, J. L. 2004, AAS/Division for Planetary Sciences Meeting Abstracts Radar Observations of Binary Asteroid 2002 CE26
- McGaha, J. E., Blythe, M., Shelly, F., Bezpalko, M., Huber, R., Manguso, L., Adams, S., Piscitelli, J., Stuart, J., Sayer, R., Evans, J. B., Viggh, H., Shelus, P. J., & Marsden, B. G. 2002, Minor Planet Electronic Circulars 2002 CE26
© 2004-2005, 2007 by Wm. Robert Johnston.
Last modified 5 March 2007.
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