(3948) Bohr

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Asteroid
(3948) Bohr
Properties of the orbit ( animation )
Epoch:  May 23, 2014 ( JD 2,456,800.5)
Orbit type Inner main belt asteroid
Major semi-axis 2.2632  AU
eccentricity 0.1947
Perihelion - aphelion 1.8226 AU - 2.7038 AU
Inclination of the orbit plane 2.7289 °
Length of the ascending node 190.6958 °
Argument of the periapsis 121.0304 °
Sidereal period 3.40 a
Mean orbital velocity 19.80 km / s
Physical Properties
Rotation period 24.884 h (± 0.002)
Absolute brightness 13.4 mag
history
Explorer Poul Jensen
Date of discovery September 15, 1985
Another name 1985 RF , 1975 TG 5 , 1975 VH 7 , 1978 NR 1 , 1981 JF
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(3948) Bohr is an asteroid of the main inner belt that was discovered on September 15, 1985 by the Danish astronomer Poul Jensen at the Schmidt telescope of the Brorfelde observatory ( IAU code 054) near Holbæk . There had already been several unconfirmed sightings of the asteroid: on October 14, 1975 (1975 TG 5 ), November 6, 1975 (1975 VH 7 ) and July 4 and 8, 1978 (1978 NR 1 ) at the Crimean Observatory in Nautschnyj and on May 3, 1981 (1981 JF) at the Anderson Mesa Station of the Lowell Observatory in Coconino County , Arizona .

Mean solar distance ( major semi-axis ), eccentricity and inclination of the orbit plane of the asteroid roughly resemble the orbital data of the members of the Flora family, a large group of asteroids named after (8) Flora . Asteroids of this family move in a 4: 9 orbital resonance with the planet Mars around the sun . The group is also called the Ariadne family, after the asteroid (43) Ariadne .

The light curve of the asteroid was determined in 2012 at several observatories. Between July 16 and September 3, 2012, Larry Owings at the Barnes Ridge Observatory in Colfax , California calculated a rotation period of 24.9053 hours (± 0.0006) with 1256 observations . Simultaneously and independently of this, between July 15 and August 9, 2012, the light curve of (3948) Bohr by Daniel Klinglesmith III., Ethan Risley, Janek Turk, Angelica Vargas and Curtis Warren from the Etscorn Campus Observatory in Socorro , New Mexico in Collaboration with Andrea Ferrero from the Bigmuskie Observatory in Mombercelli , Italy calculated after 800 observations with 24.884 hours (± 0.002).

According to the SMASS classification ( Small Main-Belt Asteroid Spectroscopic Survey ), a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel at (3948) Bohr assumed a light surface, so it could, roughly speaking, be around trade an S asteroid .

(3948) Bohr was named on November 13, 1989 after the Danish physicist Niels Bohr (1885–1962) who received the Nobel Prize in Physics in 1922 for his work in researching the structure of atoms ( Bohr's atomic model ) and the radiation emitted by them . As early as 1973, a lunar crater on the western edge of the front of the moon was named after Niels Bohr: lunar crater Bohr , and in 1976 a valley near the crater: Vallis Bohr.

See also

Web links

Individual evidence

  1. ↑ (3948) Bohr at the IAU Minor Planet Center (English)
  2. ↑ Larry E. Owings: Lightcurves For 1560 Strattonia, 1928 Summa, 2763 Jeans, 3478 Fanale, 3948 Bohr, 5275 Zdislava, And 5369 Virgiugum . The Minor Planet Bulletin, Vol. 40, 2013, p. 104ff, bibcode : 2013MPBu ... 40..104O (English)
  3. ^ Daniel Klinglesmith III., Jesse Hanowell, Ethan Risley, Janek Turk, Angelica Vargas, Curtis Warren, Andrea Ferrero: Lightcurve Analysis of 3948 Bohr and (4874) Burke: An International Collaboration . The Minor Planet Bulletin, Vol. 40, 2013, p. 15f, bibcode : 2013MPBu ... 40 ... 15K (English)
  4. ^ Gianluca Masi, Sergio Foglia, Richard P. Binzel: Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog . (English)
  5. ↑ subdivision of asteroids to S-types, C-types and V-types (English)
  6. ^ Lunar crater Bohr in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS
  7. ↑ Vallis Bohr in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS