Astronomy:1154 Astronomia

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1154 Astronomia
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date8 February 1927
Designations
(1154) Astronomia
Pronunciation/æstroʊˈnoʊmiə/
Named afterastronomy[2]
(a natural science)
1927 CB · A911 RA
Minor planet categorymain-belt · (outer)[1][3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc105.83 yr (38,656 days)
|{{{apsis}}}|helion}}3.6308 AU
|{{{apsis}}}|helion}}3.1511 AU
3.3910 AU
Eccentricity0.0707
Orbital period6.24 yr (2,281 days)
Mean anomaly22.461°
Mean motion0° 9m 28.08s / day
Inclination4.5323°
Longitude of ascending node82.512°
203.85°
Physical characteristics
Dimensions55.4±5.5 km[5]
55.715±0.500 km[6]
57.253±0.339 km[7]
59±6 km[8]
59.68±18.01 km[9]
60.10±16.38 km[10]
61.08 km (SIMPS)[3][11]
64.20±1.11 km[12]
Rotation period18.1154±0.0139 h[lower-alpha 1]
Geometric albedo0.028±0.001[12]
0.0296 (SIMPS)[3][11]
0.03±0.01[8]
0.03±0.02[9]
0.03±0.03[10]
0.0337±0.0060[7]
0.036±0.008[6]
0.04±0.01[5]
Tholen = FXU:[1][3]
B–V = 0.658[1]
U–B = 0.229[1]
Absolute magnitude (H)10.46[10] · 10.51[1][3][5][7][8][9][12] · 10.80±0.10[13]


1154 Astronomia, provisional designation 1927 CB, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 8 February 1927.[14] The asteroid was named for the natural science of astronomy.

Orbit and classification

Astronomia is a background asteroid, that is, not a member of any known asteroid family.[4] It orbits the Sun in the outer main-belt at a distance of 3.2–3.6 AU once every 6 years and 3 months (2,281 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic.[1]

The asteroid was first identified as A911 RA at Heidelberg in September 1911. The body's observation arc begins the night after its official discovery observation at Heidelberg.[14]

Physical characteristics

In the Tholen classification, Astronomia has an ambiguous spectral type, closest to a carbonaceous F-type and somewhat similar to that of an X-type asteroid. Its spectrum has also been flagged as unusual and of poor quality (FXU:).[1]

Rotation period

In May 2016, the first rotational lightcurve of Astronomia was obtained from photometric observations. Lightcurve analysis gave a rotation period of 18.1154 hours with a brightness variation of 0.39 magnitude ({{{1}}}).[lower-alpha 1]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Astronomia measures between 55.4 and 64.20 kilometers in diameter and its surface has an albedo between 0.028 and 0.04.[5][6][7][8][9][10][12]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is an albedo of 0.0296 and a diameter of 61.08 kilometers based on an absolute magnitude of 10.51.[3][11]

Naming

This minor planet was named after the natural science of astronomy, a study of celestial objects, observations and phenomena in the night sky. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 108).[2]

Notes

  1. ↑ 1.0 1.1 Brincat (2017a) not yet indexed in ADS. Summary figures for (1154) Astronomia at Collaborative Asteroid Lightcurve Link (CALL)

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "JPL Small-Body Database Browser: 1154 Astronomia (1927 CB)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001154. Retrieved 8 September 2017. 
  2. ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(1154) Astronomia". Dictionary of Minor Planet Names – (1154) Astronomia. Springer Berlin Heidelberg. p. 97. doi:10.1007/978-3-540-29925-7_1155. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (1154) Astronomia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1154%7CAstronomia. Retrieved 8 September 2017. 
  4. ↑ 4.0 4.1 "Asteroid 1154 Astronomia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1154. 
  5. ↑ 5.0 5.1 5.2 5.3 Alí-Lagoa, V.; Licandro, J.; Gil-Hutton, R.; Cañ; ada-Assandri, M.; Delbo', M. et al. (June 2016). "Differences between the Pallas collisional family and similarly sized B-type asteroids". Astronomy and Astrophysics 591: 11. doi:10.1051/0004-6361/201527660. Bibcode: 2016A&A...591A..14A. 
  6. ↑ 6.0 6.1 6.2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 8 September 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  8. ↑ 8.0 8.1 8.2 8.3 Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N. et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics 554: 16. doi:10.1051/0004-6361/201220680. Bibcode: 2013A&A...554A..71A. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013A&A...554A..71A. Retrieved 8 September 2017. 
  9. ↑ 9.0 9.1 9.2 9.3 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T. et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal 814 (2): 13. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 8 September 2017. 
  10. ↑ 10.0 10.1 10.2 10.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  11. ↑ 11.0 11.1 11.2 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  12. ↑ 12.0 12.1 12.2 12.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  13. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 8 September 2017. 
  14. ↑ 14.0 14.1 "1154 Astronomia (1927 CB)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1154. Retrieved 8 September 2017. 

External links



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