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1847 Stobbe, provisional designation A916 CA, is an asteroid from the middle region of the asteroid belt, approximately 23 kilometers in diameter.

It was discovered on 1 February 1916, by Danish astronomer Holger Thiele at Bergedorf Observatory in Hamburg, Germany. The asteroid was later named for German astronomer Joachim Stobbe.

Orbit and classification

Stobbe orbits the Sun in the central main-belt at a distance of 2.6–2.7 AU once every 4 years and 3 months (1,540 days). Its orbit has an eccentricity of 0.02 and an inclination of 11° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Bergedorf. Its first (unused) identification as A902 YB was made at Heidelberg Observatory in 1902.

Physical characteristics

On the SMASS taxonomic scheme, the X-type asteroid is characterized as a Xc-subtype, a group of bodies with intermediary spectra between those typically seen for metallic and carbonaceous bodies.

Rotation period

In March 2009, a rotational lightcurve of Stobbe was obtained from photometric observations made by French amateur astronomer Pierre Antonini at his Observatoire de Bédoin rendered a well-defined period of 5.617±0.002 hours with a brightness variation of 0.35 in magnitude (U=3), superseding a previous observation at the Roach Motel Observatory (856) in Riverside, California, that gave a period of 6.37±0.02 hours and an amplitude of 0.27 in magnitude (U=2).

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid has an albedo of 0.11–0.14 with a corresponding diameter between 22.7 and 23.9 kilometers.

The Collaborative Asteroid Lightcurve Link agrees with these results and derives an albedo of 0.113 and a diameter of 23.85 kilometers, while a study using preliminary results from NEOWISE diverges significantly from all other observations, giving a diameter of 17.4 kilometers and an albedo of 0.232.

Naming

This minor planet was named in honor of German astronomer and observer of comets and minor planets, Joachim Stobbe (1900–1943). During 1925–1927 he worked at the discovering Hamburg–Bergedorf Observatory and later at the Berlin Observatory, where he observed the rotational lightcurve of the large near-Earth object 433 Eros in detail. During the last few years of his life, he was director of the Poznan Observatory in Poland. The official naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4236).

References

1. ^ "JPL Small-Body Database Browser: 1847 Stobbe (A916 CA)" (2017-04-30 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(1847) Stobbe". Dictionary of Minor Planet Names – (1847) Stobbe. Springer Berlin Heidelberg. p. 148. doi:10.1007/978-3-540-29925-7_1848. ISBN 978-3-540-00238-3.
3. ^ "LCDB Data for (1847) Stobbe". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2016.
4. ^ 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. Retrieved 17 May 2016.
5. ^ 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:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 8 December 2016.
6. ^ 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:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 17 May 2016.
7. ^ 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)
8. ^ Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 17 October 2019.
9. ^ Behrend, Raoul. "Asteroids and comets rotation curves – (1847) Stobbe". Geneva Observatory. Retrieved 17 May 2016.
10. ^ Malcolm, G. (June 2002). "Rotational Periods and Lightcurves of 445 Edna, 1817 Katanga and 1847 Stobbe". The Minor Planet Bulletin. 29: 28–29. Bibcode:2002MPBu...29...28M. Retrieved 17 May 2016.
11. 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. Retrieved 17 May 2016.
12. ^ "1847 Stobbe (A916 CA)". Minor Planet Center. Retrieved 1 March 2016.
13. Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

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
• 1847 Stobbe at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1847 Stobbe at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by Holger Thiele
• Named minor planets
• X-type asteroids
• Xc-type asteroids (SMASS)
• Astronomical objects discovered in 1916