(3671) Dionysus and S/1997 (3671) 1
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: |
2.19797191942117 AU
| |
orbital period P: |
3.2587 y (=1190.3 d)
| |
eccentricity e: |
0.541689705094077
| |
perihelion distance q: |
1.00735315858485 AU
| |
aphelion distance Q: |
3.38859068 AU
| |
inclination i: |
13.5468044169779°
| |
argument of perihelion omega: |
204.20549062558°
| |
ascending node OMEGA: |
82.2010747339807°
| |
mean anomaly M: |
114.423197697378°
| |
perihelion passage TP: |
2004-01-17.6940115
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1984-2004 (209 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(3.6 km)
| |
semimajor axis/primary radius a/Rp: |
4.8 +0.8/-0.4 [P05a]
| |
orbital period P: |
27.72 ± 0.02 h [P05a]
| |
eccentricity e: |
0.07 +0.03/-0.07 [P05a]
| |
other data, primary:
|
diameter: |
1.5 km [H03b]
| |
absolute magnitude H: |
16.3 [SBc]
| |
rotation period: |
2.7053 h [OOa]
| |
amplitude delta M: |
0.14-0.26 [MPb]
| |
color index B-V: |
0.68 [P98a]
| |
color index V-R: |
0.39 [P98a]
| |
color index R-I: |
0.39 [P98a]
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.16) assumed
| |
mass: |
?
| |
density: |
(1.6 +0.9/-0.4) g/cm3 [P05a]
| |
type: |
Cb [SBd]; EM [OOa]
|
other data, secondary:
|
diameter: |
(0.3 km)
| |
diameter ratio Ds/Dp: |
0.20 ± 0.02 [P05a]
| |
component magnitude difference: |
?
| |
rotation period: |
?
|
|
--(3671) Dionysus--discovery and notes:
Primary discovered 27 May 1984 from Palomar Observatory, California, USA, by C. S. Shoemaker and E. M. Shoemaker. Also designated 1984 KD.
Companion discovered by S. Mottola, G. Hahn, P. Pravec, and L. Sarounova in lightcurve observations 30 May-8 June 1997 from European Southern Observatory in La Silla and from Ondrejov; announced 10 June 1997.
(3671) Dionysus is an Amor asteroid with a perihelion just inside the Earth's aphelion distance.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Harris, Alan W. & Davies, John K. 1999, Icarus, Volume 142, Issue Icarus, pp. 464-475. Physical Characteristics of Near-Earth Asteroids from Thermal Infrared Spectrophotometry
- Fauvaud, S., Bretaudeau, H., Bruno, A., & Renou, A. 1998, The Minor Planet Bulletin, Bulletin of the Minor Planets Section of the Assoc iation of Lunar and Planetary Observers, Volume 25., p.15 Astrometric Positions of Minor Planet 3671 Dionysus and 52 Europa
- Pravec, Petr, Wolf, Marek, & Sarounova, Lenka 1998, Icarus, Volume 133, Issue 1, pp. 79-88. Occultation/Eclipse Events in Binary Asteroid 1991 VH
- Ostro, S. J. 1996, American Astronomical Society, DPS meeting #28, #01.26; Bulletin of the American Astronomical Society, Vol. 28, p.1057 Radar Imaging of Asteroids
- Zeigler, K. W. & Florence, W. B. 1985, Icarus Photoelectric photometry of asteroids 9 Metis, 18 Melpomene, 60 Echo, 116 Sirona, 230 Athamantis, 694 Ekard, and 1984 KD
- Zeigler, K. W. & Florence, W. B. 1984, Bulletin of the American Astronomical Society Photoelectric Photometry of Asteroids 9 Metis, 18 Melpomene, 60 Echo, 116 Sirona, 230 Athamantis, 694 Ekard, and 1984 KD
© 2001-2005, 2008 by Wm. Robert Johnston.
Last modified 25 November 2008.
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