(41) Daphne and S/2008 (41) 1
compiled by Wm. Robert Johnston
last updated 29 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: |
2.764355496 AU
| |
orbital period P: |
4.60 y (=1,678.762524 d)
| |
eccentricity e: |
0.27178178
| |
perihelion distance q: |
2.0130540 AU
| |
aphelion distance Q: |
3.515656957 AU
| |
inclination i: |
15.766710°
| |
argument of perihelion omega: |
46.32026°
| |
ascending node OMEGA: |
178.14775°
| |
mean anomaly M: |
354.623621°
| |
perihelion passage TP: |
2008-06-08.07129
| |
Epoch: |
14 MAY 2008
| |
data arc: |
1866-2008 (1043 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(~500 km)
| |
semimajor axis/primary radius a/Rp: |
(~6?)
| |
orbital period P: |
~1.6 d [I8930]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
174 ± 12 km [JPL]
| |
absolute magnitude H: |
7.12 [JPL]
| |
rotation period: |
5.988 h [JPL]
| |
amplitude delta M: |
?
| |
color index U-B: |
0.363±0.017 [JPL]
| |
color index B-V: |
0.726±0.008 [JPL]
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
0.10 [JPL]
| |
geometric albedo: |
0.083±0.012 [JPL]
| |
mass: |
?
| |
density: |
?
| |
type: |
C, Ch [JPL]
|
other data, secondary:
|
diameter: |
<2 km [I8930]
| |
diameter ratio Ds/Dp: |
(0.01)
| |
component magnitude difference: |
10 [I8930]
| |
rotation period: |
?
|
|
--(41) Daphne--discovery and notes:
Primary discovered 22 May 1856 by H. Goldschmidt at Paris. Alternate designation 1949 TG.
Secondary discovered 28 March 2008 by A. R. Conrad, W. J. Merline, J. D. Drummond, P. M. Tamblyn, C. Dumas, B. X. Carry, R. D. Campbell, R. W. Goodrich, W. M. Owen, and C. R. Chapman from Keck II adaptive telescope observations; announced 31 March 2008.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Durech, J. & Kaasalainen, M. 2004, Bulletin of the American Astronomical Society Asteroid Shape Models Refined By Stellar Occultation Silhouettes
- Volquardsen, E. L., Rivkin, A. S., & Bus, S. J. 2004, Bulletin of the American Astronomical Society Improved 3 micron Band Determination in the Spectra of Aqueously Altered Asteroid Regoliths
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System, EAR-A-I0028-4-SBN0001/SMASSII-V1.0:41DAPHNE01 41 Daphne CCD Spectrum
- Kaasalainen, M., Torppa, J., & Piironen, J. 2002, Astronomy and Astrophysics Binary structures among large asteroids
- Thuillot, W., Berthier, J., Arlot, J.-E., Fienga, A., Hestroffer, D., Colas, F., & Descamps, P. 1999, Bulletin of the American Astronomical Society Astrometric parameters of asteroids from stellar occultations
- Gehrels, T., Drummond, J. D., & Levenson, N. A. 1987, Icarus The absence of satellites of asteroids
- Barucci, M. A., Fulchignoni, M., Burchi, R., & D'Ambrosio, V. 1985, Icarus Rotational properties of ten main belt asteroids - Analysis of the results obtained by photoelectric photometry
- Barucci, M. A. 1983, Astronomy and Astrophysics Supplement Series Estimate of the shape and pole coordinates for the asteroid 41 Daphne
- Wallentine, Derek N. 1977, Journal of the American Association of Variable Star Observers (JAAVSO) Asteroid Photometry and the ALPO Minor Planet Section
- Scaltriti, F. & Zappala, V. 1977, Astronomy and Astrophysics Photoelectric photometry of the minor planets 41 Daphne and 129 Antigone
- Barton, S. G. 1907, Astronomische Nachrichten Ephemeris of (41) Daphne
- Luther, R. 1865, Astronomische Nachrichten Neue Ephemeride der Daphne (41). Von Herrn Director, Dr. R. Luther
- Carl, Philipp 1863, Astronomische Nachrichten Ephemeride der Daphne (41), von Herrn Dr. Carl in München
- 1862, Monthly Notices of the Royal Astronomical Society Minor Planet 41 Daphne, 75 ?
- Förster, W. & Tietjen, F. 1862, Astronomische Nachrichten Elemente und Ephemeride des Planeten (41) Daphne Cometen-Beobachtungen auf der Berliner
Sternwarte, von Herrn W. Förster und F. Tietjen
- Schubert, Ernest 1858, Astronomical Journal On the new asteroid taken and observed in 1857 for (41) Daphne
© 2007, 2008 by Wm. Robert Johnston.
Last modified 29 November 2008.
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