(66652) Borasisi
compiled by Wm. Robert Johnston
last updated 25 November 2008
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: |
43.6151002599504 AU
| |
orbital period P: |
288.0471 y (=105211 d)
| |
eccentricity e: |
0.0870336266829969
| |
perihelion distance q: |
39.8191199061844 AU
| |
aphelion distance Q: |
47.41108061 AU
| |
inclination i: |
0.562670278778104°
| |
argument of perihelion omega: |
195.120505653145°
| |
ascending node OMEGA: |
84.6116071941318°
| |
mean anomaly M: |
46.1445770568453°
| |
perihelion passage TP: |
1968-02-28.3492371
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1999-2004 (31 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
4,660 ± 170 km [N04a]
| |
semimajor axis/primary radius a/Rp: |
(56)
| |
orbital period P: |
46.263 +0.006/-0.074 d [N04a]
| |
eccentricity e: |
0.460 ± 0.013 [N04a]
| |
inclination to ecliptic i: |
152° ± 3° [N04a]
| |
other data, primary:
|
diameter: |
166 km? [N04a]
| |
absolute magnitude H: |
5.82 [JPL]
| |
rotation period: |
?
| |
amplitude delta M: |
<0.05 [L06a]
| |
color index B-V: |
0.820 ± 0.170 [H02a]
| |
color index V-R: |
0.646 ± 0.058 [H02a]
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.12 (477 nm) [N04a]
0.17 (R-band) [N04a]
| |
mass: |
(2.39 ± 0.48) x 1018 kg [N04a]
| |
density: |
(1 g/cm3) assumed
| |
type: |
?
|
other data, secondary:
|
diameter: |
137 km? [N04a]
| |
diameter ratio Ds/Dp: |
0.83 [N04a]
| |
component magnitude difference: |
(0.4)
| |
mass: |
(1.34 ± 0.27) x 1018 kg [N04a]
| |
rotation period: |
?
|
|
--(66652) Borasisi--discovery and notes:
Primary discovered 8 September 1999 by C. Trujillo, J. K. Luu, and D. C. Jewitt from Mauna Kea, Hawaii, USA. Alternate designation 1999 RZ253, name assigned 26 September 2007.
Companion detected 23 April 2003 by K. S. Noll, D. C. Stephens, D. Cruikshank, W. Grundy, W. Romanishin, and S. Tegler using the Hubble Space Telescope. Earlier HST observations on 9 November 2001 suggested a companion.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, Keith S., Stephens, Denise C., Grundy, Will M., & Griffin, Ian 2004,
Icarus The orbit, mass, and albedo of transneptunian binary (66652) 1999
RZ<SUB>253</SUB>
- Noll, K. S., Stephens, D. C., Grundy, W. M., Osip, D. J., & Griffin, I.
2004, AAS/Division for Planetary Sciences Meeting Abstracts The Orbits,
Masses, and Albedos of Transneptunian Binaries
- Denissenko, D. V. 2004, Astronomy Letters Occultations of Stars Brighter
Than 15 mag by the Largest Trans-Neptunian Objects in 2004-2014
- Brown, M. E. 2000, AAS/Division for Planetary Sciences Meeting Near-infrared spectroscopy of Kuiper belt objects
- Veillet, C., Cuillandre, J. C., Woodworth, D. R., McDonald, J., & Marsden, B. G. 2000, Minor Planet Circulars 1999 RZ253
- Trujillo, C. A., Luu, J. X., Jewitt, D. C., Tholen, D. J., Sheppard, S. S., & Marsden, B. G. 2000, Minor Planet Circulars 1999 RZ253
© 2003-2007, 2008 by Wm. Robert Johnston.
Last modified 25 November 2008.
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