330 Adalberta

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330 Adalberta
Discovery [1]
Discovered by M. Wolf
Discovery site Heidelberg Obs.
Discovery date 2 February 1910
MPC designation 330 Adalberta
Named after
Adalbert Merx (discoverer's family)
Adalbert Krüger (astronomer)[2]
A910 CB · 1937 AD
1951 SW · 1974 OQ
1978 PS1 · 1978 QJ3
1980 EE
main-belt · (inner)[3]
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 106.20 yr (38791 d)
Aphelion 3.0926 AU (462.65 Gm)
Perihelion 1.8427 AU (275.66 Gm)
2.4677 AU (369.16 Gm)
Eccentricity 0.25327
3.88 yr (1415.9 d)
0° 15m 15.336s / day
Inclination 6.7569°
Earth MOID 0.862326 AU (129.0021 Gm)
Jupiter MOID 2.3714 AU (354.76 Gm)
Jupiter Tisserand parameter 3.432
Physical characteristics
Dimensions 9.84 km (calculated)[3]
3.5553 h (0.14814 d) [1]
3.5553±0.0001 h[4]
0.20 (assumed)[3]
12.4 [1]

330 Adalberta, provisional designation A910 CB, is a stony asteroid from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by German astronomer Max Wolf at Heidelberg Observatory in southern Germany, on 2 February 1910.[5]

The S-type asteroid orbits the Sun at a distance of 1.8–3.1 AU once every 3 years and 11 months (1,417 days). Its orbit shows an eccentricity of 0.25 and is tilted by 7 degrees to the plane of the ecliptic. In 2013, a photometric light-curve analysis performed at Los Algarrobos Observatory (I38), Uruguay, rendered a rotation period of 3.5553±0.0001 hours with a brightness amplitude of 0.44 in magnitude. The Collaborative Asteroid Lightcurve Link assumes that the asteroid's surface has a albedo of 0.20, which is a typical value for stony bodies.[1]

Previously, on 18 March 1892, another body discovered by Max Wolf with the provisional designation 1892 X was originally named 330 Adalberta, but was lost and never recovered (also see Lost minor planet). In 1982, it was determined that Wolf erroneously measured two images of stars, not asteroids. As it was a false positive and the body never existed, the name and number "330 Adalberta" was then reused for this asteroid, A910 CB.[a][2]

The minor planet was named in honor of the discoverer's father-in-law, Adalbert Merx (after whom another minor planet 808 Merxia is also named), or, possibly, for Adalbert Krüger (1832–1896), German astronomer and editor of the Astronomische Nachrichten, one of the first international journals in the field of astronomy.[2]


  1. ^ In 1982 R. M. West, C. Madsen, and L. D. Schmadel showed that 1892 X were galactic stars.
  1. ^ a b c d e "JPL Small-Body Database Browser: 330 Adalberta (A910 CB)" (2015-07-06 last obs.). Jet Propulsion Laboratory. Retrieved 11 May 2016. 
  2. ^ a b c Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (330) Adalberta. Springer Berlin Heidelberg. p. 43. ISBN 978-3-540-29925-7. Retrieved January 2016. 
  3. ^ a b c d "LCDB Data for (330) Adalberta". Asteroid Lightcurve Database (LCDB). Retrieved January 2016. 
  4. ^ Alavarez, Eduardo Manuel; Pilcher, Frederick (January 2014). "Period Determination for 330 Adalberta: A Low Numbered Asteroid with a Previously Unknown Period". The Minor Planet Bulletin 41 (1): 23–24. Bibcode:2014MPBu...41...23A. ISSN 1052-8091. Retrieved January 2016. 
  5. ^ "330 Adalberta (A910 CB)". Minor Planet Center. Retrieved January 2016. 

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