Asteroids with Satellites Database--Johnston's Archive
(120347)
Salacia
and Actaea
compiled by Wm. Robert Johnston
last updated
20 September 2014
--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, Cubewano
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
41.9621 AU
| |
orbital period P: |
271.828 yr
(= 99285.1 d)
| |
eccentricity e: |
0.106288
| |
perihelion distance q: |
37.5020 AU
| |
aphelion distance Q: |
46.4221 AU
| |
inclination i: |
23.944010°
| |
argument of perihelion ω: |
308.461°
| |
ascending node Ω: |
280.22934°
| |
mean anomaly M: |
119.201°
| |
perihelion passage TP: |
1924 May 20
| |
Epoch: |
2014 May 23
| |
data arc: |
1982-2010
(100 obs.)
| |
Earth MOID: |
36.5442 AU
| |
Jupiter Tisserand invariant TJ: |
5.285
|
| Neptune Tisserand invariant TN: | 2.86 [*D] |
orbital data, secondary:
|
semimajor axis as: |
5619
± 87 km
[S12c]
| |
separation/primary radius as/rp: | 13 [*D] | |
separation/Hill radius as/rH: | 0.0024 [*D] | |
orbital period Ps: |
5.49380
± 0.00016
d [S12c]
| |
eccentricity es: |
0.0084
± 0.0076
[S12c]
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
4.2
[MPC]
4.25 ± 0.05 [F13a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
901
± 45/45
km [F13a]
| |
geometric albedo: |
0.044
± 0.004/0.004
[F13a]
| |
color index U-B: |
?
| |
color index B-V: |
0.61
[P13c]
| |
color index V-R: | 0.42 ± 0.04 [P13c] | |
color index B-R: | 1.03 ± 0.06 [P13c] | |
color index V-I: | 0.91 ± 0.07 [P13c] | |
taxonomic type: |
BR (G-mode) [P13c]
| |
mass m: |
4.38x1020
± 1.6x1019
kg [S12c]
| |
density ρ: |
1.29
± 0.29/0.23
g/cm3[F13a]
| |
Hill radius rH: |
2300000 km [*D]
|
other data, primary:
|
diameter dp: |
854
± 45
km [F13a]
| |
color index V-I: | 0.87 ± 0.01 [B08d] | |
rotation period RPp: |
6.5
h [T14a]
| |
amplitude in mag., rotational ΔM: |
0.06
± 0.02
[T14a]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
286
± 24
km [F13a]
| |
diameter ratio ds/dp: |
0.344
[G11a]
| |
component mag. difference ΔM: |
2.37
± 0.06
[S12c]
| |
color index V-I: | 0.89± 0.04 [B08d] | |
rotation period RPs: |
?
| |
|
|
--
(120347) Salacia and Actaea
--discovery and notes:
Primary discovered
2004 Sep 22
from
Palomar Observatory, California, USA
by
H. G. Roe, M. E. Brown, and K. M. Barkume.
Alternate designation(s):
2004 SB60
.
Linked to prediscovery observations from 1982 Jul 25.
Permanent number assigned 2005 Nov 16.
Named 2011 Feb 18 for the mythological Roman goddess of calm ocean [MPC73984].
Companion discovered
2006 Jul 21
by K. S. Noll, H. F. Levison, D. C. Stephens, and W. M. Grundy
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2006 Sep 19 [N06f].
Provisional designation S/2006 (120347) 1.
Permanent designation I Actaea, assigned 2011 Feb 18; named for the Roman mythological Nereid [MPC73984].
--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
- Stansberry, J. A., Grundy, W. M., Mueller, M., Benecchi, S. D., Rieke, G. H., Noll, K. S., Buie, M. W., Levison, H. F., Porter, S. B., & Roe, H. G. 2012, Icarus Physical properties of trans-neptunian binaries (120347) Salacia-Actaea and (42355) Typhon-Echidna
- Vilenius, E., Kiss, C., Mommert, M., Müller, T., Santos-Sanz, P., Pal, A., Stansberry, J., Mueller, M., Peixinho, N., Fornasier, S., Lellouch, E., Delsanti, A., Thirouin, A., Ortiz, J. L., Duffard, R., Perna, D., Szalai, N., Protopapa, S., Henry, F., Hestroffer, D., Rengel, M., Dotto, E., & Hartogh, P. 2012, Astronomy and Astrophysics "TNOs are Cool": A survey of the trans-Neptunian region. VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects
- 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
- Pinilla-Alonso, N., Licandro, J., & Lorenzi, V. 2008, Astronomy and Astrophysics Visible spectroscopy in the neighborhood of 2003EL{61}
- Schaller, Emily L. & Brown, M. E. 2008, Bulletin of the American Astronomical Society Detection of Additional Members of the 2003 EL61 Family via Infrared Spectroscopy
- Schaller, E. L. & Brown, M. E. 2008, The Astrophysical Journal Detection of Additional Members of the 2003 EL61 Collisional Family via Near-Infrared Spectroscopy
- Noll, K. S., Levison, H. F., Stephens, D. C., & Grundy, W. M. 2006, International Astronomical Union Circular (120347) 2004 SB_60
- Bambery, R., Helin, E., Pravdo, S., Hicks, M., Lawrence, K., Thicksten, R., Meyer, M., & Marsden, B. G. 2005, Minor Planet Electronic Circulars 2004 SB60
- Roe, H. G., Brown, M. E., Barkume, K. M., & Marsden, B. G. 2005, Minor Planet Electronic Circulars Seven TNOs
©
2006-2012, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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