Asteroids with Satellites Database--Johnston's Archive
(120347)
Salacia
and Actaea
compiled by Wm. Robert Johnston
last updated
10 May 2014
under construction--testing upgrades!
--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: |
?
| |
color index B-R: | 1.03 [?] | |
taxonomic type: |
?
| |
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
± 45/45
km [F13a]
| |
color index V-I: | 0.87± 0.01 [B08d] | |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
0.03
± 0.01
[*T09a]
| |
pole direction : |
?
;
?
|
other data, secondary:
|
diameter ds: |
286
± 24/24
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
HST observations from Hubble Space Telescope.
Announced
2006 Sep 19 [I8751].
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
10 May 2014.
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