1141 Bohmia

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1141 Bohmia
Discovery [1]
Discovered by M. F. Wolf
Discovery site Heidelberg Obs.
Discovery date 4 January 1930
MPC designation (1141) Bohmia
Named after
Katharina Bohm-Waltz [2]
(German philanthropist)
1930 AA · 1949 SU
main-belt · (inner)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 87.83 yr (32,079 days)
Aphelion 2.6457 AU
Perihelion 1.8946 AU
2.2701 AU
Eccentricity 0.1654
3.42 yr (1,249 days)
0° 17m 17.52s / day
Inclination 4.2753°
Physical characteristics
Dimensions 5.642±0.241 km[4]

1141 Bohmia, provisional designation 1930 AA, is a Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 4 January 1930.[6] The asteroid was named after German philanthropist Katharina Bohm-Waltz.[2]

Orbit and classification[edit]

Bohmia is a member of the Flora family (402),[3] a giant asteroid family and the largest family of stony asteroids in the main-belt.[7]:23 It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,249 days; semi-major axis 2.27 AU). Its orbit has an eccentricity of 0.17 and an inclination of 4° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Heidelberg in January 1930.[6]

Physical characteristics[edit]

Bohmia's spectral type is unknown. However, its albedo is similar to that of the Flora family's parent body, 8 Flora, which is a stony S-type asteroid.[7]:23

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Bohmia measures 5.642 kilometers in diameter and its surface has an albedo of 0.251.[4][5]

Rotation period[edit]

No rotational lightcurve of Bohmia has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.[1][8]


This minor planet was named after Katharina Bohm-Waltz (died 1901), a German philanthropist who donated a 0.72-meter reflecting telescope (named Waltz reflector) to the discovering Heidelberg Observatory. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 107).[2]


  1. ^ a b c d e "JPL Small-Body Database Browser: 1141 Bohmia (1930 AA)" (2017-11-02 last obs.). Jet Propulsion Laboratory. Retrieved 7 January 2018. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1141) Bohmia. Springer Berlin Heidelberg. pp. 96–97. ISBN 978-3-540-00238-3. Archived from the original on 25 April 2016. Retrieved 7 January 2018. 
  3. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 7 January 2018. 
  4. ^ a b Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 7 January 2018. 
  5. ^ a b Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 7 January 2018. 
  6. ^ a b "1141 Bohmia (1930 AA)". Minor Planet Center. Retrieved 7 January 2018. 
  7. ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families" (PDF). Asteroids IV: 297–321. arXiv:1502.01628Freely accessible. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. Retrieved 7 January 2018. 
  8. ^ "LCDB Data for (1141) Bohmia". Asteroid Lightcurve Database (LCDB). Retrieved 7 January 2018. 

External links[edit]