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28 Bellona information


28 Bellona
Bellona (apmag 11.8) near a magnitude 12 star, next to Abell 2670[1]
Discovery
Discovered byR. Luther
Discovery date1 March 1854
Designations
MPC designation
(28) Bellona
Pronunciation/bɛˈlnə/[2]
Named after
Bellona
Alternative designations
1951 CC2
Minor planet category
Main belt
AdjectivesBellonian /bɛˈlniən/[2]
Symbol (historical)
Orbital characteristics
Epoch Sept 30, 2012 (JD 2456200.5)
Aphelion477.240 Gm (3.196 AU)
Perihelion353.977 Gm (2.358 AU)
Semi-major axis
415.608 Gm (2.777 AU)
Eccentricity0.151
Orbital period (sidereal)
1690.19 d (4.63 a)
Mean anomaly
121.574°
Inclination9.430°
Longitude of ascending node
144.330°
Argument of perihelion
344.461°
Physical characteristics
Dimensions97 ± 11 km[3]
120.9 ± 3.4 km (IRAS)[4]
108.10 ± 11.49 km[5]
Mass(2.62±0.15)×1018 kg[5]
Mean density
3.95 ± 1.28 g/cm3[5]
Synodic rotation period
15.706 h[4][6]
Geometric albedo
0.1763[4][7]
Spectral type
S [4]
Absolute magnitude (H)
7.09[4]

Bellona (minor planet designation: 28 Bellona) is a large main-belt asteroid. It was discovered by German astronomer R. Luther on March 1, 1854, and named after Bellōna, the Roman goddess of war; the name was chosen to mark the beginning of the Crimean War. Its historical symbol was Bellona's whip and spear; it is in the pipeline for Unicode 17.0 as U+1CECE 𜻎 ().[8][9]

Bellona is a stony (S-type) asteroid with a cross-section size of around 100–120 km. 28 Bellona is orbiting the Sun with a period of 4.63 years.

Bellona has been studied by radar.[10] Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado in 2007 gave a light curve with a period of 15.707 ± 0.002 hours and a brightness variation of 0.27 ± 0.03 in magnitude. This report is in close agreement with a period estimate of 15.695 hours reported in 1983, and rejects a longer period of 16.523 hours reported in 1979.[11]

  1. ^ "Astrometry.net job 1005148". Astrometry.net. Retrieved 6 February 2015.
  2. ^ a b "Bellona". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ Cite error: The named reference Ďurech2011 was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference jpldata was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  6. ^ "Archived copy". Archived from the original on 13 September 2006. Retrieved 12 August 2006.{{cite web}}: CS1 maint: archived copy as title (link)
  7. ^ "Archived copy". Archived from the original on 22 July 2012. Retrieved 12 August 2006.{{cite web}}: CS1 maint: archived copy as title (link)
  8. ^ Bala, Gavin Jared; Miller, Kirk (18 September 2023). "Unicode request for historical asteroid symbols" (PDF). unicode.org. Unicode. Retrieved 26 September 2023.
  9. ^ Unicode. "Proposed New Characters: The Pipeline". unicode.org. The Unicode Consortium. Retrieved 6 November 2023.
  10. ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.
  11. ^ Cite error: The named reference Warner2007 was invoked but never defined (see the help page).

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