1313 Berna

1313 Berna
Discovery[1]
Discovered byS. Arend
Discovery siteUccle Obs.
Discovery date24 August 1933
Designations
(1313) Berna
Named after
Bern[2]
(capital of Switzerland)
1933 QG · 1926 EA
A911 OA
main-belt[1][3] · (middle)
background[4][5]
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc84.74 yr (30,953 d)
Aphelion3.2074 AU
Perihelion2.1112 AU
2.6593 AU
Eccentricity0.2061
4.34 yr (1,584 d)
241.65°
0° 13m 38.28s / day
Inclination12.545°
298.14°
99.773°
Known satellites1(see 2nd infobox)[a]
Physical characteristics
13.12±2.44 km[6]
13.504±0.311 km[7][8][9]
13.93±0.64 km[10]
14.27±0.36 km[11]
19.96±4.97 km[12]
Mass(2.25±2.00)×1015 kg[10]
Mean density
1.21±0.14 cm3[10]
25.46 h[13][14][15][16]
0.13[12]
0.169[11]
0.185[7][8][9]
0.212[17]
0.245[6]
S (assumed)[13]
11.55[6]
11.6[1][3][13]
11.69±0.12[17]
11.75[12]
11.80[7][9][11]

1313 Berna, provisional designation 1933 QG, is a background asteroid and synchronous binary system from the Eunomian region in the central asteroid belt, approximately 14 kilometers (8.7 miles) in diameter. It was discovered on 24 August 1933, by Belgian astronomer Sylvain Arend at the Uccle Observatory in Belgium.[1] The assumed S-type asteroid has a longer-than average rotation period of 25.5 hours and is likely elongated in shape.[13] It was named for the Swiss capital of Bern.[1] The discovery of an 11-kilometer-sized companion was announced in February 2004.[a]

  1. ^ a b c d e Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Mainzer-2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Carry-2012 was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  12. ^ a b c Cite error: The named reference Nugent-2016 was invoked but never defined (see the help page).
  13. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Behrend-2004b was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Behrend-2006a was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  17. ^ a b Cite error: The named reference Marchis-2012 was invoked but never defined (see the help page).


Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).