Astronomy:1460 Haltia

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1460 Haltia
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date24 November 1937
Designations
(1460) Haltia
Named afterHalti/Haltia[2]
(highest Finnish peak)
1937 WC
Minor planet categorymain-belt · (middle)
background[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc79.61 yr (29,077 days)
|{{{apsis}}}|helion}}3.0202 AU
|{{{apsis}}}|helion}}2.0643 AU
2.5422 AU
Eccentricity0.1880
Orbital period4.05 yr (1,481 days)
Mean anomaly245.72°
Mean motion0° 14m 35.52s / day
Inclination6.6858°
Longitude of ascending node74.185°
358.22°
Physical characteristics
Dimensions6.57±1.19 km[4]
7.43±0.61 km[5]
8.440±0.225 km[6]
8.97 km (calculated)[7]
Rotation period3.58682±0.00006 h[8]
3.588±0.005 h[8]
3.59 h[7]
Geometric albedo0.186±0.032[5]
0.20 (assumed)[7]
0.226±0.030[6]
0.36±0.15[4]
S (assumed)[7]
Absolute magnitude (H)12.60[4][6][7] · 12.7[1] · 12.78±0.14[9] · 13.10[5]


1460 Haltia, provisional designation 1937 WC, is a stony background asteroid from the central regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 24 November 1937, by Finnish astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory in Turku, Finland.[10] The asteroid was named after Halti (Haltia), Finland's highest peak on the border to Norway.[2]

Orbit and classification

Haltia is a non-family asteroid of the main belt's background population.[3] It orbits the Sun in the central asteroid belt at a distance of 2.1–3.0 AU once every 4 years and 1 month (1,481 days). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Turku.[10]

Physical characteristics

Haltia is an assumed stony S-type asteroid.[7]

Rotation period

Two rotational lightcurves of Haltia were obtained from photometric observations by astronomers Henk de Groot, Raoul Behrend and René Roy. Lightcurve analysis gave a respective rotation period of 3.58682 and 3.588 hours with a brightness amplitude of 0.32 magnitude ({{{1}}}).[8] The Lightcurve Data Base adopts a consolidated period of 3.59 hours.[7]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Haltia measures between 6.57 and 8.44 kilometers in diameter and its surface has an albedo between 0.186 and 0.36.[4][5][6]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.97 based on an absolute magnitude of 12.6.[7]

Naming

This minor planet was named after Halti (Haltia), the highest Finnish peak at 1,365 metres (4,478 ft) located on the border between Norway and Finland.[2] The official naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3928).[11]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1460 Haltia (1937 WC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001460. Retrieved 20 October 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1460) Haltia". Dictionary of Minor Planet Names – (1460) Haltia. Springer Berlin Heidelberg. p. 117. doi:10.1007/978-3-540-29925-7_1461. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 "Asteroid 1460 Haltia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1460. 
  4. ↑ 4.0 4.1 4.2 4.3 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 20 October 2017. 
  5. ↑ 5.0 5.1 5.2 5.3 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)
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 20 October 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 "LCDB Data for (1460) Haltia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1460%7CHaltia. Retrieved 20 October 2017. 
  8. ↑ 8.0 8.1 8.2 Behrend, Raoul. "Asteroids and comets rotation curves – (1460) Haltia". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001460. Retrieved 20 October 2017. 
  9. ↑ 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 20 October 2017. 
  10. ↑ 10.0 10.1 "1460 Haltia (1937 WC)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1460. Retrieved 20 October 2017. 
  11. ↑ Schmadel, Lutz D. (2009). "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. https://archive.org/details/dictionaryminorp2008schm. 

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