Asteroids with Satellites Database--Johnston's Archive
(1139)
Atami
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
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.947630389 AU
| |
orbital period P: |
2.718116179 yr
(= 992.7919342 d)
| |
eccentricity e: |
0.255501191
| |
perihelion distance q: |
1.45000850 AU
| |
aphelion distance Q: |
2.445252273 AU
| |
inclination i: |
13.0851898°
| |
argument of perihelion ω: |
206.632214°
| |
ascending node Ω: |
213.368752°
| |
mean anomaly M: |
35.578078°
| |
perihelion passage TP: |
2014 Feb 13.88436
| |
Epoch: |
2014 May 23
| |
data arc: |
1929-2014
(1166 obs.)
| |
Earth MOID: |
0.470437 AU
| |
Jupiter Tisserand invariant TJ: |
3.824
|
orbital data, secondary:
|
binary dynamical type: | B [P07f] | |
semimajor axis as: |
>15
km
[M06a]
| |
separation/primary radius as/rp: | 5.0 [*D] | |
separation/Hill radius as/rH: | 0.019 [*E] | |
orbital period Ps: |
1.144
d [M06a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
1.38
[P07f]
|
|
other data, system (combined):
|
absolute mag. H: |
12.51
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
7.81
km [*D]
| |
geometric albedo: |
0.28
[*E]
| |
color index U-B: |
0.497
[JPL]
| |
color index B-V: |
0.92
[JPL]
| |
taxonomic type: |
S (SMASSII) [JPL]
S (Tholen) [JPL]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
790 km [*E]
|
other data, primary:
|
diameter dp: |
6
km [M06a]
| |
rotation period RPp: |
27.45
h [M06a]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
5
km [M06a]
| |
diameter ratio ds/dp: |
0.833
[*D]
| |
component mag. difference ΔM: |
0.4
[* D]
| |
rotation period RPs: |
27.45
h [M06a]
| |
|
|
--
(1139) Atami
--discovery and notes:
Primary discovered
1929 Dec 01
from
Tokyo, Japan
by
O. Oikawa and K. Kubokawa.
Alternate designation(s):
1929 XE
.
Permanent number assigned 1930.
Named - for a harbor near Tokyo, Honshu, Japan.
Companion discovered
2005 Aug 31
by F. Manzini, R. Behrend, A. Klotz, S. Ostro, L. Benner, J. Giorgini, M. Nolan A. Hine, J.-L. Margot, C. Magri, M. Shepard, R. Roy, F. Colas, P. Antonini, P. Paakkonen, L. Bernasconi, A. Leroy, A. Oksanen, R. Crippa, R. Poncy, S. Charbonnel, D. Starkey, J. Coloma, C. Cavadore, E. Barbotin, J.-M. Llapasset, G. Farroni, and R. Koff
using
lightcurve
observations from Sozzago, Italy; Geneva Observatory; Telescope a Action Rapide pour les Objets Transitoires, Haute-Provence Observatory, France; Jet Propulsion Laboratory; Arecibo Observatory; Cornell University; University of Maine, Farmington; Bloomsburg University of Pennsylvania, Pennsylvania, USA.
Announced
2005 Sep 01 [M06a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Koff, Robert A. 2006, Minor Planet Bulletin Lightcurves of asteroids 141 Lumen, 259 Alatheia, 363 Padua, 455 Bruchsalia 514 Armida, 524 Fidelio, and 1139 Atami
- Manzini, F., Behrend, R., Klotz, A., Ostro, S., Benner, L., Giorgini, J., Nolan, M., Hine, A., Margot, J.-L., Magri, C., Shepard, M., Roy, R., Colas, F., Antonini, P., Paakkonen, P., Bernasconi, L., Leroy, A., Oksanen, A., Crippa, R., Poncy, R., Charbonnel, S., Starkey, D., Coloma, J., Cavadore, C., Barbotin, E., Llapasset, J.-M., Farroni, G., & Koff, R. 2006, Central Bureau Electronic Telegrams (1139) Atami
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System 1139 Atami CCD Spectrum
- Lupishko, D. F., Velichko, F. P., & Shevchenko, V. G. 1989, JPRS Report Science Technology USSR Space Photometry of AMOR Asteroids 1036 Ganymede and 1139 Atami
- Lupishko, D. F., Velichko, F. P., & Shevchenko, V. G. 1988, Astronomicheskii Vestnik Photometry of the AMOR type asteroids 1036 Ganymede and 1139 Atami
- Pilcher, F. 1986, Minor Planet Bulletin Minor Planets at Unusually Favorable Oppositions in 1986
- Kharin, B. T. 1974, Materialy 4-oj Nauch. Konf. Tomsk. Un-ta po Mat. i Mekh. Improvement of the orbital elements of minor planets Atami (1139) and Ganymed (1036).
- Herglotz, H. K. & McCarter, J. W. 1969, The Astronomical Journal Observed Positions of Minor Planets: Atami (1139), Holmia (378), Bavaria (301), and 1931 TTI (1624)
- de La Villemarqué, E. 1930, Astronomische Nachrichten Petite Planète 1139 [1929 XE] (Tokyo 19)
©
2005-2009, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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