| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 8 February 1927 |
| Designations | |
| (1154) Astronomia | |
| Pronunciation | /æstroʊˈnoʊmiə/ |
Named after |
astronomy
[2] (a natural science) |
| 1927 CB · A911 RA | |
|
main-belt · (
outer)
[1]
[3] background [4] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 ( JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 105.83 yr (38,656 days) |
| Aphelion | 3.6308 AU |
| Perihelion | 3.1511 AU |
| 3.3910 AU | |
| Eccentricity | 0.0707 |
| 6.24 yr (2,281 days) | |
| 22.461 ° | |
| 0° 9m 28.08s / day | |
| Inclination | 4.5323° |
| 82.512° | |
| 203.85° | |
| Physical characteristics | |
| Dimensions | 55.4±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] |
| 18.1154±0.0139 h [a] | |
| 0.028±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] | |
| 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 ( U=3-). [a]
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
- ^ a b Brincat (2017a) not yet indexed in ADS. Summary figures for (1154) Astronomia at Collaborative Asteroid Lightcurve Link (CALL)
References
- ^ a b c d e f g h i "JPL Small-Body Database Browser: 1154 Astronomia (1927 CB)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 8 September 2017.
- ^ a b 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.
- ^ a b c d e f "LCDB Data for (1154) Astronomia". Asteroid Lightcurve Database (LCDB). Retrieved 8 September 2017.
- ^ a b "Asteroid 1154 Astronomia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 October 2019.
- ^ a b c d 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. Bibcode: 2016A&A...591A..14A. doi: 10.1051/0004-6361/201527660. hdl: 11336/63614.
- ^ a b c 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. arXiv: 1406.6645. Bibcode: 2014ApJ...791..121M. doi: 10.1088/0004-637X/791/2/121. S2CID 119293330. Retrieved 8 September 2017.
- ^ a b c d 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. arXiv: 1109.6407. Bibcode: 2011ApJ...741...90M. doi: 10.1088/0004-637X/741/2/90. S2CID 35447010.
- ^ a b c d 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. arXiv: 1303.5487. Bibcode: 2013A&A...554A..71A. doi: 10.1051/0004-6361/201220680. S2CID 119214002. Retrieved 8 September 2017.
- ^ a b c d 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. arXiv: 1509.02522. Bibcode: 2015ApJ...814..117N. doi: 10.1088/0004-637X/814/2/117. S2CID 9341381. Retrieved 8 September 2017.
- ^ a b c d 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. arXiv: 1606.08923. Bibcode: 2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63.
- ^ a b c 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. Retrieved 22 October 2019.
- ^ a b c d 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. Bibcode: 2011PASJ...63.1117U. doi: 10.1093/pasj/63.5.1117. ( online, AcuA catalog p. 153)
- ^ 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. arXiv: 1506.00762. Bibcode: 2015Icar..261...34V. doi: 10.1016/j.icarus.2015.08.007. S2CID 53493339. Retrieved 8 September 2017.
- ^ a b "1154 Astronomia (1927 CB)". Minor Planet Center. Retrieved 8 September 2017.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1154 Astronomia at AstDyS-2, Asteroids—Dynamic Site
- 1154 Astronomia at the JPL Small-Body Database
