Asteroids with Satellites Database--Johnston's Archive
(41)
Daphne
and Peneius
compiled by Wm. Robert Johnston
last updated
17 March 2024
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:
main belt asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.7631602516 AU
| |
orbital period P: |
4.5932206812 yr
(= 1677.6738538 d)
| |
eccentricity e: |
0.2739814227
| |
perihelion distance q: |
2.0061056746 AU
| |
aphelion distance Q: |
3.5202148285 AU
| |
inclination i: |
15.78455688°
| |
argument of perihelion ω: |
46.10771973°
| |
ascending node Ω: |
178.05684169°
| |
mean anomaly M: |
117.81607274°
| |
perihelion passage TP: |
2022 Mar 12.9529311
| |
Epoch: |
2023 Sep 13
| |
data arc: |
1866-2024
(7336 obs.)
| |
Earth MOID: |
1.03121 AU
| |
Jupiter Tisserand invariant TJ: |
3.232
|
orbital data, secondary:
|
semimajor axis as: |
461.3
± 1.9 km
[E22a]
| |
separation/primary radius as/rp: | 5.1 [*D] | |
separation/Hill radius as/rH: | 0.015 [*D] | |
orbital period Ps: |
1.1374464
± 0.0000008
d [E22a]
| |
eccentricity es: |
0.008
± 0.0033
[E22a]
| |
inclination is: | 128.2° ± 0.6° [E22a] | |
ascending node Ωs: | 272.9° ± 0.6° [E22a] | |
argument of pericenter ωs: | 186° ± 19° [E22a] | |
mean anomaly M: | 346° ± 19° [E22a] | |
Epoch: | 2008 Mar 25.1 | |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
7.12
[MPC]
7.64 [JPL]
| |
slope parameter G: |
0.1 [JPL]
| |
effective diameter dE: |
179.61
± 2.58
km [U11a]
| |
geometric albedo: |
0.078
± 0.003
[U11a]
| |
color index U-B: |
0.363
[T95a]
| |
color index B-V: |
0.726
[T95a]
| |
color index J-H: | 0.348 ± 0.033 [S10b] | |
taxonomic type: |
Ch (SMASSII) [JPL]
C (Tholen) [JPL]
| |
mass m: |
6.01x1018
± 7.5x1016
kg [E22a]
| |
density ρ: |
1.95
± 0.15
g/cm3[C08b]
| |
Hill radius rH: |
30000 km [*D]
|
other data, primary:
|
diameter dp: |
179.61
± 2.58
km [U11a]
| |
axial ratios a/b, b/c: | 1.37, 1 [D95a] | |
rotation period RPp: |
5.9879856
± 0.0000007
h [D95a]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
163 ± 5°
,
31 ± 8°
[D95a]
|
other data, secondary:
|
diameter ds: |
<2
km [C08a]
| |
diameter ratio ds/dp: |
0.011
[*D]
| |
component mag. difference ΔM: |
10
[I8930]
| |
rotation period RPs: |
?
| |
|
|
--
(41) Daphne and Peneius
--discovery and notes:
Primary discovered
1856 May 22
from
Paris, France
by
H. Goldschmidt.
Alternate designation(s):
1949 TG.
Permanent number assigned 1856.
Named 1856 for the Greek mythological daughter of Terra [-].
Companion discovered
2008 Mar 28
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
using
adaptive optics telescope
observations from W. M. Keck II Telescope, Mauna Kea, Hawaii, USA.
Announced
2008 Mar 31 [C08a].
Provisional designation S/2008 (41) 1.
Permanent designation I Peneius, assigned 2019 Mar 06 [].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Matter, Alexis, Delbo, Marco, Ligori, Sebastiano, Crouzet, Nicolas, & Tanga, Paolo 2013, Icarus Corrigendum to "Determination of physical properties of the Asteroid (41) Daphne from interferometric observations in the thermal infrared" [Icarus 215 (2011) 47-56]
- Matter, Alexis, Delbo, Marco, Ligori, Sebastiano, Crouzet, Nicolas, & Tanga, Paolo 2011, Icarus Determination of physical properties of the Asteroid (41) Daphne from interferometric observations in the thermal infrared
- Takahashi, Jun, Itoh, Yoichi, & Takahashi, Shigeru 2011, Publications of the Astronomical Society of Japan Mid-Infrared Spectroscopy of 11 Main-Belt Asteroids
- Somers, James M., Hicks, M. D., & Lawrence, K. J. 2008, Bulletin of the American Astronomical Society Optical Characterization of Planetary Radar Targets
- Conrad, Al, Carry, B., Drummond, J. D., Merline, W. J., Dumas, C., Owen, W. M., Chapman, C. R., Tamblyn, P. M., Goodrich, R. W., & Campbell, R. D. 2008, Bulletin of the American Astronomical Society Shape and Size of Asteroid (41) Daphne from AO Imaging
- Drummond, Jack D., Merline, W. J., Conrad, A., Dumas, C., & Carry, B. 2008, Bulletin of the American Astronomical Society Standard Triaxial Ellipsoid Asteroids from AO Observations
- Conrad, A. R., Keck Observatory, W. M., Merline, W. J., Drummond, J. D., Tamblyn, P. M., Dumas, C., Carry, B. X., Campbell, R. D., Goodrich, R. W., Owen, W. M., & Chapman, C. R. 2008, International Astronomical Union Circular S/2008 (41) 1
- Merline, W. J., Conrad, A. R., Drummond, J. D., Carry, B., Dumas, C., Tamblyn, P. M., Chapman, C. R., Owen, W. M., Durda, D. D., Campbell, R. D., & Goodrich, R. W. 2008, LPI Contributions Discovery of an Extreme Mass-Ratio Satellite of (41) Daphne in a Close Orbit
- 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 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
- 1980, The Astronomer Asteroidal notes
- 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
- 1948, Minor Planet Circulars Observations of (41) Daphne Made at Monte Mario, Rome
- Loreta, Eppe 1939, Gazette Astronomique Observations de l'eclat des petites planetes (1) Ceres, (7) Iris, (18) Melpomene et (41) Daphne
- Barton, S. G. 1907, Astronomische Nachrichten Ephemeris of (41) Daphne
- 1867, Annales de l'Observatoire de Paris. Observations Ascensions droites et distances polaires des petites Planètes.
- Luther, R. 1866, Astronomische Nachrichten Neue Ephemeride der Daphne (41). Von Herrn Director, Dr. R. Luther
- 1866, Annales de l'Observatoire de Paris. Observations Ascensions droites et distances polaires des petites Planètes.
- 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, The Astronomical Journal On the new asteroid taken and observed in 1857 for (41) Daphne
©
2008-2019, 2024
by Wm. Robert Johnston.
Last modified
17 March 2024.
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