Asteroids with Satellites Database--Johnston's Archive
(2577)
Litva, second component, and S/2012 (2577) 1
compiled by Wm. Robert Johnston
last updated
21 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:
Mars crossing asteroid, Hungaria
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.904439611 AU
| |
orbital period P: |
2.628203632 yr
(= 959.9513767 d)
| |
eccentricity e: |
0.137937478
| |
perihelion distance q: |
1.64174601 AU
| |
aphelion distance Q: |
2.167133209 AU
| |
inclination i: |
22.9078761°
| |
argument of perihelion ω: |
283.982228°
| |
ascending node Ω: |
182.609107°
| |
mean anomaly M: |
26.575021°
| |
perihelion passage TP: |
2014 Mar 13.13686
| |
Epoch: |
2014 May 23
| |
data arc: |
1934-2014
(864 obs.)
| |
Earth MOID: |
0.759072 AU
| |
Jupiter Tisserand invariant TJ: |
3.836
|
orbital data, second component:
|
binary dynamical type: | A [L14c] | |
semimajor axis as: |
21
km
[*E]
| |
separation/primary radius as/rp: | 11 [*E] | |
separation/Hill radius as/rH: | 0.041 [*E] | |
orbital period Ps: |
1.495
± 0.0004
d [W11a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
orbital data, S/2012 (2577) 1:
|
binary dynamical type: | A [L14c] | |
semimajor axis as: |
378
km
[M13b]
| |
separation/primary radius as/rp: | 190 [*E] | |
separation/Hill radius as/rH: | 0.734 [*E] | |
orbital period Ps: |
214
d [M13b]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.18
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
4.4
km [*D]
| |
geometric albedo: |
0.48
[*D]
| |
color index U-B: |
0.34
[JPL]
| |
color index B-V: |
0.787
[JPL]
| |
taxonomic type: |
EU (Tholen) [JPL]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
520 km [*E]
|
other data, primary:
|
diameter dp: |
4
km [M13b]
| |
rotation period RPp: |
2.813
± 0.000
h [W11a]
| |
amplitude in mag., rotational ΔM: |
0.24
± 0.02
[W09c]
| |
amplitude in mag., mutual events ΔM: | 0.14 ±0.01 [W09c] | |
pole direction Β, λ: |
?
,
?
|
other data, second component:
|
diameter ds: |
1.4
km [M13b]
| |
diameter ratio ds/dp: |
0.35
± 0.02
[W09b]
| |
component mag. difference ΔM: |
2.3
± 0.1
[*D]
| |
rotation period RPs: |
5.6842
± 0.0002
h [W09c]
| |
|
other data, S/2012 (2577) 1:
|
diameter ds: |
1.2
km [M13b]
| |
diameter ratio ds/dp: |
0.3
[M13b]
| |
component mag. difference ΔM: |
2.6
[* D]
| |
rotation period RPs: |
?
| |
|
|
--
(2577) Litva
--discovery and notes:
Primary discovered
1975 Mar 12
from
Nauchnyj, Crimea, Ukraine, USSR
by
N. S. Chernykh.
Alternate designation(s):
1975 EE3,
1934 VY, 1954 JD, 1976 SA2.
Linked to prediscovery observations from 1934 Nov 03.
Permanent number assigned 1982.
Named 1982 Dec 01 for Lithuania [MPC7472].
Second component discovered
2009 Feb 28
by B. D. Warner, P. Pravec, A. W. Harris, D. Higgins, C. Bembrick, and J. Brinsfield
using
lightcurve
observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA; Ondrejov Observatory, Czech Republic; Space Science Institute, La Canada, California, USA; Hunters Hill Observatory, Ngunnawal, ACT, Australia; Mt. Tarana Observatory, Bathurst, New South Wales, Australia; Via Capote Observatory, Thousand Oaks, California, USA.
Announced
2009 Mar 11 [W09b].
Third component discovered
2012 Jun 22
by W. J. Merline, P. M. Tamblyn, B. D. Warner, P. Pravec, J. P. Tamblyn, C. Neyman, A. R. Conrad, W. M. Owen, B. Carry, J. D. Drummond, C. R. Chapman, B. L. Enke, W. M. Grundy, C. Veillet, S. B. Porter, C. Arcidiacono, J. C. Christou, D. D. Durda, A. W. Harris, H. A. Weaver, C. Dumas, D. Terrell, and P. Maley
using
adaptive optics telescope
observations from W. M. Keck II Telescope, Mauna Kea, Hawaii, USA.
Announced
2013 Dec 22 [M13b].
Provisional designation S/2012 (2577) 1.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Lust, N. B. & Britt, D. T. 2014, Lunar and Planetary Science Conference Observations and Analysis of 2577 Litva
- Merline, W. J., Tamblyn, P. M., Warner, B. D., Pravec, P., Tamblyn, J. P., Neyman, C., Conrad, A. R., Owen, W. M., Carry, B., Drummond, J. D., Chapman, C. R., Enke, B. L., Grundy, W. M., Veillet, C., Porter, S. B., Arcidiacono, C., Christou, J. C., Durda, D. D., Harris, A. W., Weaver, H. A., Dumas, C., Terrell, D., & Maley, P. 2013, International Astronomical Union Circular S/2012 (2577) 1
- Green, D. W. E. 2013, Central Bureau Electronic Telegrams S/2012 (2577) 1
- Warner, B. D. & Pravec, P. 2013, Central Bureau Electronic Telegrams S/2012 (2577) 1
- Green, D. W. E. 2013, Central Bureau Electronic Telegrams S/2012 (2577) 1
- Merline, W. J., Tamblyn, P. M., Warner, B. D., Pravec, P., Tamblyn, J. P., Neyman, C., Keck Observatory, W. M., Conrad, A. R., Owen, W. M., Carry, B., Drummond, J. D., Chapman, C. R., Enke, B. L., Grundy, W. M., Veillet, C., Porter, S. B., Arcidiacono, C., Christou, J. C., Durda, D. D., Harris, A. W., Weaver, H. A., Dumas, C., Terrell, D., & Maley, P. 2013, Central Bureau Electronic Telegrams S/2012 (2577) 1
- Sanchez, Juan A., Michelsen, René, Reddy, Vishnu, & Nathues, Andreas 2013, Icarus Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids
- Warner, Brian D. 2011, Minor Planet Bulletin A Quartet of Known and Suspected Hungaria Binary Asteroids
- Warner, Brian D., Pravec, Petr, Harris, Alan W., Higgins, David, Bembrick, Colin, Brinsfield, James W., Pray, Donald P., Pollock, Joseph, Reichart, Daniel, Ivarsen, Kevin, Haislip, Josh, Lacluyze, Aaron, & Galad, Adrian 2009, Minor Planet Bulletin 2577 Litva: A Hungaria Binary
- Warner, B. D., Pravec, P., Harris, A. W., Higgins, D., Bembrick, C., & Brinsfield, J. 2009, Central Bureau Electronic Telegrams (2577) Litva
- Stephens, Robert D. 2004, Minor Planet Bulletin Photometry of 1196 Sheba, 1341 Edmee, 1656 Suomi, 2577 Litva, and 2612 Kathryn
©
2009-2014, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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