1372 Haremari, provisional designation 1935 QK, is a rare-type Watsonian asteroid and a suspected trojan of Ceres from the central regions of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 31 August 1935, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[12] The asteroid was named for all female staff members of the Astronomical Calculation Institute.[2]
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 31 August 1935 |
| Designations | |
| (1372) Haremari | |
Named after | all female staff members of ARI[2] |
| 1935 QK · 1928 DX 1937 BD · 1944 QK 1951 EW1 · 1953 OM 1953 PZ | |
| main-belt · (middle) Watsonia[3] · Ceres trojan[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 89.18 yr (32,574 days) |
| Aphelion | 3.1761 AU |
| Perihelion | 2.3557 AU |
| 2.7659 AU | |
| Eccentricity | 0.1483 |
| 4.60 yr (1,680 days) | |
| 243.89° | |
| 0° 12m 51.48s / day | |
| Inclination | 16.450° |
| 327.45° | |
| 88.484° | |
| Physical characteristics | |
| Dimensions | 21.96±0.72 km[5] 23.90±0.53 km[6] 24.18 km (derived)[7] 26.491±0.292 km[8] 27.724±0.158 km[9] 31.17±8.52 km[10] |
| 15.25±0.03 h[11] | |
| 0.0303±0.0021[9] 0.039±0.012[8] 0.09±0.03[10] 0.1097 (derived)[7] 0.126±0.006[6] 0.146±0.027[5] | |
| SMASS = L[1][7] | |
| 11.00[5][6][10] · 11.1[1][7] · 12.2[9] | |
Orbit and classification
editHaremari is a member of the very small Watsonia family (537), named after its parent body, namesake and largest member, 729 Watsonia.[3][13]: 23
It orbits the Sun in the central main-belt at a distance of 2.4–3.2 AU once every 4 years and 7 months (1,680 days). Its orbit has an eccentricity of 0.15 and an inclination of 16° with respect to the ecliptic.[1] The body's observation arc begins with its first observation at Heidelberg in February 1928, more than seven years prior to its official discovery observation.[12]
Trojan of Ceres
editLong-term numerical integrations suggest that Haremari is a trojan of Ceres, staying a 1:1 orbital resonance with the only dwarf planet of the asteroid belt. It is thought that Haremari is currently transiting from a tadpole to a horseshoe orbit. Other suspected co-orbitals are the asteroids 855 Newcombia, 4608 Wodehouse, and 8877 Rentaro.[4][14]
Physical characteristics
editIn the SMASS classification, Haremari is a rare L-type asteroid with a moderate albedo.[1][7] This type corresponds with the overall spectral type of the Watsonia family.[13]: 23
Rotation period
editIn November 2009, a rotational lightcurve of Haremari was obtained from photometric observations by Richard Durkee at the Shed of Science Observatory (H39). Lightcurve analysis gave a rotation period of 15.25 hours with a brightness amplitude of 0.12 magnitude (U=2).[11]
Diameter and albedo
editAccording to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Haremari measures between 21.96 and 31.17 kilometers in diameter and its surface has an albedo between 0.0303 and 0.146.[5][6][8][9][10]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1097 and a diameter of 24.18 kilometers based on an absolute magnitude of 11.1.[7]
Naming
editThis minor planet jointly honors all the female staff members of the Astronomical Calculation Institute (Heidelberg University) (German: Astronomisches Rechen-Institut), commonly known as ARI. In often published versions, "Haremari" is a composed name and means "the harem of A.R.I.".[2]
Alternative version
editAccording to Ingrid van Houten-Groeneveld, who worked as a young astronomer at Heidelberg, Reinmuth had often been asked by his colleges at ARI to name some of his discoveries after their female friends, as wells as after popular actresses (and not just the female staff at ARI). He then compiled all these proposals to the name "Haremari". However, as Groeneveld recorded, "Reinmuth did not want to publish the original meaning and he, therefore, devised the interpretation of the first sentence in 1948".[2]
References
edit- ^ a b c d e f "JPL Small-Body Database Browser: 1372 Haremari (1935 QK)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 31 October 2017.
- ^ a b c d Schmadel, Lutz D. (2007). "(1372) Haremari". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 111. doi:10.1007/978-3-540-29925-7_1373. ISBN 978-3-540-00238-3.
- ^ a b "Asteroid 1372 Haremari – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Archived from the original on 20 August 2020. Retrieved 26 October 2019.
- ^ a b Christou, A. A. (April 2000). "Co-orbital objects in the main asteroid belt". Astronomy and Astrophysics. 356: L71 – L74. Bibcode:2000A&A...356L..71C. Retrieved 31 October 2017.L71 - L74&rft.date=2000-04&rft_id=info:bibcode/2000A&A...356L..71C&rft.au=Christou, A. A.&rft_id=http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2000A&A...356L..71C&rfr_id=info:sid/en.wikipedia.org:1372 Haremari" class="Z3988">
- ^ a b c d 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. S2CID 46350317. Retrieved 31 October 2017.
- ^ 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/63.5.1117.1117-1138&rft.date=2011-10&rft_id=info:doi/10.1093/pasj/63.5.1117&rft_id=info:bibcode/2011PASJ...63.1117U&rft.aulast=Usui&rft.aufirst=Fumihiko&rft.au=Kuroda, Daisuke&rft.au=Müller, Thomas G.&rft.au=Hasegawa, Sunao&rft.au=Ishiguro, Masateru&rft.au=Ootsubo, Takafumi&rft.au=Ishihara, Daisuke&rft.au=Kataza, Hirokazu&rft.au=Takita, Satoshi&rft.au=Oyabu, Shinki&rft.au=Ueno, Munetaka&rft.au=Matsuhara, Hideo&rft.au=Onaka, Takashi&rfr_id=info:sid/en.wikipedia.org:1372 Haremari" class="Z3988"> (online, AcuA catalog p. 153)
- ^ a b c d e f "LCDB Data for (1372) Haremari". Asteroid Lightcurve Database (LCDB). Retrieved 31 October 2017.
- ^ 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 31 October 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 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 31 October 2017.
- ^ a b Durkee, Russell I. (July 2010). "Asteroids Observed from the Shed of Science Observatory: 2009 October - 2010 March". The Minor Planet Bulletin. 37 (3): 125–127. Bibcode:2010MPBu...37..125D. ISSN 1052-8091. Retrieved 31 October 2017.125-127&rft.date=2010-07&rft.issn=1052-8091&rft_id=info:bibcode/2010MPBu...37..125D&rft.au=Durkee, Russell I.&rft_id=http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37..125D&rfr_id=info:sid/en.wikipedia.org:1372 Haremari" class="Z3988">
- ^ a b "1372 Haremari (1935 QK)". Minor Planet Center. Retrieved 31 October 2017.
- ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. S2CID 119280014.297-321&rft.date=2014-12&rft_id=https://api.semanticscholar.org/CorpusID:119280014#id-name=S2CID&rft_id=info:bibcode/2015aste.book..297N&rft_id=info:arxiv/1502.01628&rft_id=info:doi/10.2458/azu_uapress_9780816532131-ch016&rft.isbn=9780816532131&rft.aulast=Nesvorný&rft.aufirst=D.&rft.au=Broz, M.&rft.au=Carruba, V.&rfr_id=info:sid/en.wikipedia.org:1372 Haremari" class="Z3988">
- ^ Christou, A. (November 2001). "The Trojans of Ceres and Vesta". American Astronomical Society. 33: 1134. Bibcode:2001DPS....33.5205C. Retrieved 31 October 2017.
External links
edit- Nueva órbita del asteroide 1.372 Haremari, José María González Aboin, Universidad de Madrid (1954) (in Spanish)
- Les noms des astéroïdes, M.-A. Combes, L'Astronomie, Vol. 87, (1974) (in French)
- 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
- 1372 Haremari at AstDyS-2, Asteroids—Dynamic Site
- 1372 Haremari at the JPL Small-Body Database
