Asteroids with Satellites Database--Johnston's Archive
(1313)
Berna
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:
main belt asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.655728252 AU
| |
orbital period P: |
4.327964130 yr
(= 1580.788899 d)
| |
eccentricity e: |
0.208458632
| |
perihelion distance q: |
2.10211877 AU
| |
aphelion distance Q: |
3.209337729 AU
| |
inclination i: |
12.5347978°
| |
argument of perihelion ω: |
99.290186°
| |
ascending node Ω: |
298.356889°
| |
mean anomaly M: |
192.381733°
| |
perihelion passage TP: |
2016 May 28.02526
| |
Epoch: |
2014 May 23
| |
data arc: |
1933-2014
(1198 obs.)
| |
Earth MOID: |
1.15153 AU
| |
Jupiter Tisserand invariant TJ: |
3.323
|
orbital data, secondary:
|
binary dynamical type: | B [P07f] | |
semimajor axis as: |
25
km
[*E]
| |
separation/primary radius as/rp: | 2.23 [B06a] | |
separation/Hill radius as/rH: | 0.014 [*D] | |
orbital period Ps: |
1.061
± 0.00004
d [B06a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
1.45
[P07f]
|
|
other data, system (combined):
|
absolute mag. H: |
11.6
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
13.5
± 0.31
km [M11b]
| |
geometric albedo: |
0.184
± 0.02
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
1.14x1015
kg [*D]
| |
density ρ: |
1.22
± 0.15
g/cm3[B06a]
| |
Hill radius rH: |
1800 km [*D]
|
other data, primary:
|
diameter dp: |
10.6
± 0.24
km [*D]
| |
rotation period RPp: |
25.464
± 0.001
h [B06a]
| |
amplitude in mag., rotational ΔM: |
0.28
± 0.02
[B06a]
| |
amplitude in mag., mutual events ΔM: | 0.75 ±0.05 [B06a] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
8.37
km [*D]
| |
diameter ratio ds/dp: |
0.79
[B06a]
| |
component mag. difference ΔM: |
0.51
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(1313) Berna
--discovery and notes:
Primary discovered
1933 Aug 24
from
Uccle, Belgium
by
S. J. Arend.
Alternate designation(s):
1933 QG,
1926 EA, A911 OA.
Permanent number assigned -.
Named - for the city of Berne, Switzerland.
Companion discovered
2004 Feb 06
by R. Behrend, R. Roy, S. Sposetti, N. Waelchli, D. Pray, N. Berger, C. Demeautis, D. Matter, R. Durkee, A. Klotz, D. Starkey, and V. Cotrez
using
lightcurve
observations from Geneva Observatory.
Announced
2004 Feb 23 [B04c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Vereshchagina, I., Sokov, E., Gorshanov, D., Devyatkin, A., Romas, E., L'vov, V., Slesarenko, V., Rastegaev, D., Balega, Yu., Maximov, A., Diachenko, V., Malogolovec, E., Kouprianov, V., & Naiden, Ya. 2012, European Planetary Science Congress 2012 Investigation of binary asteroids and NEOs
- Iglesias-Saugar, Jesus, Marchis, F., Descamps, P., Michalowsky, T., & Polinska, M. 2008, Bulletin of the American Astronomical Society Combining 3D Lightcurve Modeling and Spitzer Infrared Observations: 1313 Berna
- Behrend, R., Bernasconi, L., Roy, R., Klotz, A., Colas, F., Antonini, P., Aoun, R., Augustesen, K., Barbotin, E., Berger, N., Berrouachdi, H., Brochard, E., Cazenave, A., Cavadore, C., Coloma, J., Cotrez, V., Deconihout, S., Demeautis, C., Dorseuil, J., Dubos, G., Durkee, R., Frappa, E., Hormuth, F., Itkonen, T., Jacques, C., Kurtze, L., Laffont, A., Lavayssière, M., Lecacheux, J., Leroy, A., Manzini, F., Masi, G., Matter, D., Michelsen, R., Nomen, J., Oksanen, A., Pääkkönen, P., Peyrot, A., Pimentel, E., Pray, D., Rinner, C., Sanchez, S., Sonnenberg, K., Sposetti, S., Starkey, D., Stoss, R., Teng, J.-P., Vignand, M., & Waelchli, N. 2006, Astronomy and Astrophysics Four new binary minor planets: (854) Frostia, (1089) Tama, (1313) Berna, (4492) Debussy
- Behrend, Raoul, Roy, René, & Sposetti, Stefano 2004, Orion: Zeitschrift für Amateur-Astronomie Les quatre astéroïdes (1089) Tama et (1313) Berna. Histoire de deux découvertes magnifiques faites grâce à des amateurs
- Behrend, R., Roy, R., Sposetti, S., Waelchli, N., Pray, D., Berger, N., Demeautis, C., Matter, D., Durkee, R., Klotz, A., Starkey, D., & Cotrez, V. 2004, International Astronomical Union Circular (1313) Berna
- Hilton, James L. 1997, The Astronomical Journal The Mass of the Asteroid 15 Eunomia From Observations of 1313 Berna and 1284 Latvia
- Mammana, L. A. & Orellana, R. B. 1997, Boletin de la Asociacion Argentina de Astronomia La Plata Argentina Búsqueda de asteroides para determinación de masa
- Hilton, J. L. 1996, Bulletin of the American Astronomical Society The Mass of 15 Eunomia from Observations of 1284 Latvia and 1313 Berna
©
2004-2006, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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