Asteroids with Satellites Database--Johnston's Archive
(22899)
Alconrad
and S/2003 (22899) 1
compiled by Wm. Robert Johnston
last updated
21 June 2016
--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: |
2.844299130 AU
| |
orbital period P: |
4.797015316 yr
(= 1752.109844 d)
| |
eccentricity e: |
0.081280706
| |
perihelion distance q: |
2.61311249 AU
| |
aphelion distance Q: |
3.075485771 AU
| |
inclination i: |
2.8811327°
| |
argument of perihelion ω: |
218.37885°
| |
ascending node Ω: |
136.02506°
| |
mean anomaly M: |
56.959018°
| |
perihelion passage TP: |
2013 Aug 18.7820
| |
Epoch: |
2014 May 23
| |
data arc: |
1994-2014
(934 obs.)
| |
Earth MOID: |
1.60724 AU
| |
Jupiter Tisserand invariant TJ: |
3.301
|
orbital data, secondary:
|
binary dynamical type: | W [P07f] | |
semimajor axis as: |
182
km
[D10a]
| |
separation/primary radius as/rp: | 66 [*E] | |
separation/Hill radius as/rH: | 0.161 [*E] | |
orbital period Ps: |
56
d [M04a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
0.76
[M09a]
|
|
other data, system (combined):
|
absolute mag. H: |
13.7
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
5.68
± 0.47
km [M11b]
| |
geometric albedo: |
0.181
± 0.028
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
1100 km [*E]
|
other data, primary:
|
diameter dp: |
5.54
± 0.46
km [*D]
| |
rotation period RPp: |
4.03
± 0.03
h [P11b]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.23
km [*D]
| |
diameter ratio ds/dp: |
0.222
[D10a]
| |
component mag. difference ΔM: |
2.5
[I8232]
| |
rotation period RPs: |
?
| |
|
|
--
(22899) Alconrad and S/2003 (22899) 1
--discovery and notes:
Primary discovered
1999 Oct 11
from
Višnjan, Croatia
by
K. Korlevic and M. Juric.
Alternate designation(s):
1999 TO14,
1998 ML48.
Linked to prediscovery observations from 1994 Oct 09.
Permanent number assigned 2001 Mar 09.
Companion discovered
2003 Jul 26
by W. J. Merline, P. M. Tamblyn, C. R. Chapman, D. Nesvorny, D. D. Durda, C. Dumas, A. D. Storrs, L. M. Close, and F. Menard
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2003 Oct 26 [M03j].
Provisional designation S/2003 (22899) 1.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Jacobson, Seth A., Scheeres, Daniel J., & McMahon, Jay 2014, The Astrophysical Journal Formation of the Wide Asynchronous Binary Asteroid Population
- Merline, W. J., Tamblyn, P. M., Nesvorny, D., Durda, D. D., Chapman, C. R., Dumas, C., Storrs, A. D., Feldman, B., Owen, W. M., Close, L. M., & Menard, F. 2004, Bulletin of the American Astronomical Society Discovery of binaries among small asteroids in the Koronis dynamical family using the HST Advanced Camera for Surveys
- Merline, William 2004, HST Proposal Determination of orbits and colors for two new binaries in the Koronis asteroid family
- Merline, W. J., Tamblyn, P. M., Chapman, C. R., Nesvorny, D., Durda, D. D., Dumas, C., Storrs, A. D., Close, L. M., & Menard, F. 2003, International Astronomical Union Circular S/2003 (22899) 1
©
2003-2014, 2016
by Wm. Robert Johnston.
Last modified
21 June 2016.
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