Asteroids with Satellites Database--Johnston's Archive
(90482)
Orcus
and Vanth
compiled by Wm. Robert Johnston
last updated
27 May 2019
--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:
TNO, plutino
orbital data, primary (osculating elements)
[JPL]
:
semimajor axis a: |
39.4597 AU
|
orbital period P: |
247.873825088923 yr (= 90537.8 d)
|
eccentricity e: |
0.21843
|
perihelion distance q: |
30.8406 AU
|
aphelion distance Q: |
48.0789 AU
|
inclination i: |
20.552009°
|
argument of perihelion ω: |
73.3952°
|
ascending node Ω: |
268.48161°
|
mean anomaly M: |
172.5691°
|
perihelion passage TP: |
1896 Feb 10.94
|
Epoch: |
2014 Dec 09
|
data arc: |
1951-2014
(430 obs.)
|
Earth MOID: |
29.8932 AU
|
Jupiter Tisserand invariant TJ: |
5.164
|
Neptune Tisserand invariant TN: | 2.856 [*D] |
orbital data, secondary:
semimajor axis as: |
8999.8
± 9.1 km
[G19b]
|
separation/primary radius as/rp: | 19.8 [*D] |
separation/Hill radius as/rH: | 0.0041 [*D] |
orbital period Ps: |
9.539154
± 0.00002
d [G19b]
|
eccentricity es: |
0.00091
± 0.00053
[G19b]
|
inclination is: | 105.03° ± 0.18° [G19b] |
ascending node Ωs: | 53.49° ± 0.33° [G19b] |
argument of pericenter ωs: | 328° ± 51° [G19b] |
mean anomaly M: | 188.52° ± 0.39° [G19b] |
Epoch: | 2006 Sep 21.5 |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
absolute mag. H: |
2.2
[MPC]
2.31 ± 0.03 [F13a]
|
slope parameter G: |
0.28 [B09b]
|
effective diameter dE: |
1012
± 45
km [*D]
|
geometric albedo: |
0.231
± 0.018/0.011
[F13a]
|
color index U-B: |
?
|
color index B-V: |
0.68
[D05b]
|
color index V-R: | 0.37 ± 0.04 [D05b] |
color index B-R: | 1.05 [D05b] |
color index V-I: | 0.74 ± 0.04 [D05b] |
color index R-J: | 0.82 ± 0.05 [P10a] |
color index V-J: | 1.08 ± 0.04 [D05b] |
color index J-H: | 0.19 ± 0.09 [P10a] |
color index V-H: | 1.21 ± 0.05 [D05b] |
taxonomic type: |
BB (G-mode) [P10a]
|
mass m: |
6.35x1020
± 1.9x1018
kg [G19b]
|
density ρ: |
1.4
± 0.2
g/cm3[B18f]
|
Hill radius rH: |
2200000 km [*D]
|
other data, primary:
diameter dp: |
910
± 45
km [B18f]
|
rotation period RPp: |
13.188
± 0
h [R07a]
|
amplitude in mag., rotational ΔM: |
0.04
± 0.01
[T10a]
|
pole direction Β, λ: |
?
,
?
|
other data, secondary:
diameter ds: |
443
± 10
km [S19b]
|
diameter ratio ds/dp: |
0.487
± 0.026
[*D]
|
component mag. difference ΔM: |
2.61
± 0.07
[B09b]
|
rotation period RPs: |
229
h [R14a]
|
|
|
--
(90482) Orcus and Vanth
--discovery and notes:
Primary discovered
2004 Feb 17
from
Palomar Observatory, California, USA
by
M. E. Brown, C. A. Trujillo, and D. L. Rabinowitz.
Alternate designation(s):
2004 DW
.
Linked to prediscovery observations from 1951 Nov 08.
Permanent number assigned 2004 Aug 30.
Named 2004 Nov 22 for the mythological Etruscan daimon [MPC053177].
Companion discovered
2005 Nov 13
by M. E. Brown and T.-A. Suer
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Feb 22 [B07d].
Permanent designation I Vanth, assigned 2010 Mar 30; named for the Etruscan mythological creature [MPC69496].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Fornasier, S., Lellouch, E., Müller, T., Santos-Sanz, P., Panuzzo, P., Kiss, C., Lim, T., Mommert, M., Bockelée-Morvan, D., Vilenius, E., Stansberry, J., Tozzi, G. P., Mottola, S., Delsanti, A., Crovisier, J., Duffard, R., Henry, F., Lacerda, P., Barucci, A., & Gicquel, A. 2013, Astronomy and Astrophysics TNOs are Cool: A survey of the trans-Neptunian region. VIII. Combined Herschel PACS and SPIRE observations of nine bright targets at 70-500 μm
- Jones, B. M., Bennett, C., Gu, X., & Kaiser, R. I. 2012, AGU Fall Meeting Abstracts Formation of High Mass Hydrocarbons on Kuiper Belt Objects
- Belskaya, I. N., Bagnulo, S., Stinson, A., Tozzi, G. P., Muinonen, K., Shkuratov, Yu. G., Barucci, M. A., & Fornasier, S. 2012, Astronomy and Astrophysics Polarimetry of trans-Neptunian objects (136472) Makemake and (90482) Orcus
- Jones, Brant M., Bennett, C., Gu, X., & Kaiser, R. 2012, AAS/Division for Planetary Sciences Meeting Abstracts Formation of High Mass Hydrocarbons on Kuiper Belt Objects
- Belskaya, I. N., Bagnulo, S., Stinson, A., Tozzi, G. P., Muinonen, K., Barucci, A., & Fornasier, S. 2012, LPI Contributions Polarimetry of Transneptunian Objects: Updated Results
- Assafin, M., Camargo, J. I. B., Vieira Martins, R., Braga-Ribas, F., Sicardy, B., Andrei, A. H., & da Silva Neto, D. N. 2012, Astronomy and Astrophysics Candidate stellar occultations by large trans-Neptunian objects up to 2015
- Stinson, A., Belskaya, I., Bagnulo, S., Tozzi, G. P., Muinonen, K., Barucci, A., & Fornasier, S. 2012, EGU General Assembly Conference Abstracts Polarimetry of the dwarf planet (136472) Makemake
- Fornasier, S., Lellouch, E., Mueller, T., Panuzzo, P., Santos-Sanz, P., Lim, T., Kiss, C., Vilenius, E., Stansberry, J., Delsanti, A., Henry, F., Boehnhardt, H., Pal, A., Duffard, R., & Barucci, A. 2012, EGU General Assembly Conference Abstracts 'TNOs are Cool: A survey of the trans-Neptunian region'. Results from the PACS and SPIRE observations with the Herschel Space Observatory
- Delsanti, A., Guilbert-Lepoutre, A., Merlin, F., Bauer, J., Yang, B., & Meech, K. 2011, EPSC-DPS Joint Meeting 2011 The surface and thermal history of Orcus
- Fornasier, S., Lim, T., Müller, T., Panuzzo, P., Santos-Sanz, P., Vilenius, E., Boenhardt, H., Stansberry, J., Delsanti, A., Henry, F., Kiss, C., Pal, A., Duffard, R., Barucci, A., & Dotto, E. 2011, EPSC-DPS Joint Meeting 2011 Sub-millimeter observations of Centaurs and TNOs from the Herschel space telescope
- Carry, B., Hestroffer, D., DeMeo, F. E., Thirouin, A., Berthier, J., Lacerda, P., Sicardy, B., Doressoundiram, A., Dumas, C., Farrelly, D., & Müller, T. G. 2011, Astronomy and Astrophysics Integral-field spectroscopy of (90482) Orcus-Vanth
- Levi, Amit & Podolak, Morris 2011, Icarus Estimating the density of intermediate size KBOs from considerations of volatile retention
- Escapa, A. & Fukushima, T. 2011, The Astronomical Journal Free Translational Oscillations of Icy Bodies with a Subsurface Ocean Using a Variational Approach
- Ortiz, J. L., Cikota, A., Cikota, S., Hestroffer, D., Thirouin, A., Morales, N., Duffard, R., Gil-Hutton, R., Santos-Sanz, P., & de La Cueva, I. 2011, Astronomy and Astrophysics A mid-term astrometric and photometric study of trans-Neptunian object (90482) Orcus
- Ortiz, Jose L., Cikota, A., Cikota, S., Hestroffer, D., Thirouin, A., Morales, N., Duffard, R., Gil-Hutton, R., Santos-Sanz, P., & de la Cueva, I. 2010, Bulletin of the American Astronomical Society A Photometric And Astrometric Study Of The Trans-neptunian Object Orcus
- DeMeo, F. E., Barucci, M. A., Merlin, F., Guilbert-Lepoutre, A., Alvarez-Candal, A., Delsanti, A., Fornasier, S., & de Bergh, C. 2010, Astronomy and Astrophysics A spectroscopic analysis of Jupiter-coupled object (52872) Okyrhoe, and TNOs (90482) Orcus and (73480) 2002 PN<SUB>34</SUB>
- Ortiz, J. L., Cikota, A., Hestroffer, D., Cikota, S., Thirouin, A., Molina, A., Morales, N., Duffard, R., Gil-Hutton, R., & Santos-Sanz, P. 2010, European Planetary Science Congress 2010 Astrometry and photometry of Orcus from a 33-day campaign
- Nesvorný, David, Youdin, Andrew N., & Richardson, Derek C. 2010, The Astronomical Journal Formation of Kuiper Belt Binaries by Gravitational Collapse
- Delsanti, A., Merlin, F., Guilbert-Lepoutre, A., Bauer, J., Yang, B., & Meech, K. J. 2010, Astronomy and Astrophysics Methane, ammonia, and their irradiation products at the surface of an intermediate-size KBO?. A portrait of Plutino (90482) Orcus
- Lim, T. L., Stansberry, J., Müller, T. G., Mueller, M., Lellouch, E., Kiss, C., Santos-Sanz, P., Vilenius, E., Protopapa, S., Moreno, R., Delsanti, A., Duffard, R., Fornasier, S., Groussin, O., Harris, A. W., Henry, F., Horner, J., Lacerda, P., Mommert, M., Ortiz, J. L., Rengel, M., Thirouin, A., Trilling, D., Barucci, A., Crovisier, J., Doressoundiram, A., Dotto, E., Gutiérrez Buenestado, P. J., Hainaut, O., Hartogh, P., Hestroffer, D., Kidger, M., Lara, L., Swinyard, B. M., & Thomas, N. 2010, Astronomy and Astrophysics ``TNOs are Cool'': A survey of the trans-Neptunian region . III. Thermophysical properties of 90482 Orcus and 136472 Makemake
- Brown, M. E., Ragozzine, D., Stansberry, J., & Fraser, W. C. 2010, The Astronomical Journal The Size, Density, and Formation of the Orcus-Vanth System in the Kuiper Belt
- Ragozzine, Darin & Brown, M. E. 2009, AAS/Division for Planetary Sciences Meeting Abstracts #41 The Long-Term Evolution of the Mutual Orbits of Kuiper Belt Binaries
- Ragozzine, Darin Alan 2009, Ph.D. Thesis Orbital dynamics of Kuiper Belt object satellites, a Kuiper Belt family, and extra-solar planet interiors
- Assafin, M., Vieira Martins, R., Ribas, F. B., Camargo, J. I., da Silva Neto, D. N., & Andrei, A. H. 2008, European Planetary Science Congress 2008 Astrometric predictions of stellar occultations by Pluto, Charon, Triton and TNOs
- Schaefer, Bradley E., Rabinowitz, D. L., & Tourtellottte, S. W. 2008, Bulletin of the American Astronomical Society Division of Icy Bodies into Groups Based on Surface Properties
- Barucci, M. A., Merlin, F., Guilbert, A., de Bergh, C., Alvarez-Candal, A., Hainaut, O., Doressoundiram, A., Dumas, C., Owen, T., & Coradini, A. 2008, Astronomy and Astrophysics Surface composition and temperature of the TNO Orcus
- Cook, Jason C., Desch, S. J., & Roush, T. L. 2007, Bulletin of the American Astronomical Society Near Infreared Spectroscopy of Kuiper Belt Objects: More than Just Water Ice
- Sheppard, Scott S. 2007, Bulletin of the American Astronomical Society Photometric Variability of the Largest Kuiper Belt Objects: Evidence for Uniform Surfaces
- de Bergh, C., Barucci, M. A., Merlin, F., Dumas, C., Guilbert, A., Hainaut, O., Alvarez-Candal, A., Delsanti, A., Fornasier, S., & Doressoundiram, A. 2007, European Planetary Science Congress 2007 Spectroscopic observations of large TNOs with the ESO-VLT
- Sheppard, Scott S. 2007, The Astronomical Journal Light Curves of Dwarf Plutonian Planets and other Large Kuiper Belt Objects: Their Rotations, Phase Functions, and Absolute Magnitudes
- Brown, M. E. & Suer, T.-A. 2007, International Astronomical Union Circular Satellites of 2003 AZ_84, (50000), (55637), and (90482)
- Cook, Jason Campbell 2007, Ph.D. Thesis Dissecting intermediate-sized Kuiper belt objects
- Delsanti, Audrey, Bauer, J., Yang, B., & Meech, K. J. 2006, Bulletin of the American Astronomical Society Search for Crystalline Water Ice on Kuiper Belt Object Orcus
- Hussmann, Hauke, Sohl, Frank, & Spohn, Tilman 2006, Icarus Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects
- Brown, Michael 2006, HST Proposal The largest Kuiper belt objects
- Brown, Michael, Reach, Bill, & Stansberry, John 2006, Spitzer Proposal Thermal properties of the largest Kuiper belt objects
- Brown, Michael, Barkume, Kristine, Roe, Henry, & Schaller, Emily 2006, Spitzer Proposal The largest Kuiper belt objects
- Ortiz, J. L., Gutiérrez, P. J., Santos-Sanz, P., Casanova, V., & Sota, A. 2006, Astronomy and Astrophysics Short-term rotational variability of eight KBOs from Sierra Nevada Observatory
- Hussmann, H., Sohl, F., & Spohn, T. 2005, AGU Fall Meeting Abstracts Sub-Surface Oceans on Mid-Sized Icy Satellites and Large TNO's
- Trujillo, C. A., Barkume, K. M., Brown, M., Schaller, E. L., & Rabinowitz, D. L. 2005, Bulletin of the American Astronomical Society Near Infrared Spectra from Mauna Kea of the New Brightest Kuiper Belt Object
- Trujillo, Chadwick A., Brown, Michael E., Rabinowitz, David L., & Geballe, Thomas R. 2005, The Astrophysical Journal Near-Infrared Surface Properties of the Two Intrinsically Brightest Minor Planets: (90377) Sedna and (90482) Orcus
- de Bergh, C., Delsanti, A., Tozzi, G. P., Dotto, E., Doressoundiram, A., & Barucci, M. A. 2005, Astronomy and Astrophysics The surface of the transneptunian object 90482 Orcus
- Tegler, S. C., Romanishin, W., Consolmagno, G. J., Rall, J., Worhatch, R., Nelson, M., & Weidenschilling, S. 2005, Icarus The period of rotation, shape, density, and homogeneous surface color of the Centaur 5145 Pholus
- de Bergh, C., Delsanti, A., Tozzi, G.-P., Doressoundiram, A., Dotto, E., & Barucci, M. A. 2004, Bulletin of the American Astronomical Society The Surface of the Transneptunian Object 2004 DW
- Trujillo, C. A., Brown, M. E., Rabinowitz, D. L., & Geballe, T. R. 2004, Bulletin of the American Astronomical Society Near Infrared Surfaces of the Intrinsically Brightest Minor Planets 2003 VB12 and 2004 DW
- Denissenko, D. V. 2004, Astronomy Letters Occultations of Stars Brighter Than 15 mag by the Largest Trans-Neptunian Objects in 2004-2014
- Fornasier, S., Dotto, E., Barucci, M. A., & Barbieri, C. 2004, Astronomy and Astrophysics Water ice on the surface of the large TNO 2004 DW
- Rabinowitz, D., Tourtellotte, S., Brown, M., & Trujillo, C. 2004, International Astronomical Union Circular 2004 DW
©
2007-2014, 2019
by Wm. Robert Johnston.
Last modified
27 May 2019.
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