Asteroids with Satellites Database--Johnston's Archive
(22899)
Alconrad
and Juliekaibarreto
compiled by Wm. Robert Johnston
last updated
14 October 2024
--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: |
2.84337911752 AU
| |
orbital period P: |
4.7946880502 yr
(= 1751.25981034 d)
| |
eccentricity e: |
0.08558069822
| |
perihelion distance q: |
2.6000407473 AU
| |
aphelion distance Q: |
3.0867174877 AU
| |
inclination i: |
2.882641262°
| |
argument of perihelion ω: |
219.3535303°
| |
ascending node Ω: |
135.88616225°
| |
mean anomaly M: |
116.2520776°
| |
perihelion passage TP: |
2023 Mar 31.4789129
| |
Epoch: |
2024 Oct 17
| |
data arc: |
1994-2024
(3350 obs.)
| |
Earth MOID: |
1.59532 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: | 0.16 [*E] | |
orbital period Ps: |
56
d [M04a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
0.76
[M09a]
|
|
other data, system (combined):
|
absolute mag. H: |
13.93
[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: |
5.55
± 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 Juliekaibarreto
--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.
Named 2016 Jun 20 for Albert R. Conrad (1953-) [MPC100606].
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.
Permanent designation I Juliekaibarreto, assigned 2024 Oct 14; named for Julie Kai Barreto (1955-) [WGSBN0414].
--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
©
2003-2016, 2024
by Wm. Robert Johnston.
Last modified
14 October 2024.
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