Astronomy:3267 Glo

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3267 Glo
Discovery[1]
Discovered byE. Bowell
Discovery siteAnderson Mesa Stn.
Discovery date3 January 1981
Designations
(3267) Glo
Named afterEleanor F. Helin
(American astronomer)[2]
1981 AA
Minor planet categoryMars-crosser[1][3]
Phocaea[4][5]
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc36.49 yr (13,329 d)
|{{{apsis}}}|helion}}3.0178 AU
|{{{apsis}}}|helion}}1.6424 AU
2.3301 AU
Eccentricity0.2951
Orbital period3.56 yr (1,299 d)
Mean anomaly196.67°
Mean motion0° 16m 37.56s / day
Inclination24.021°
Longitude of ascending node110.47°
307.73°
Physical characteristics
Mean diameter6.45±1.44 km[6]
7.58±0.76 km[7]
13.56±1.1 km[8]
13.59 km (derived)[4]
Rotation period6.8782±0.0011 h[4][lower-alpha 1]
Geometric albedo0.0607±0.011[8]
0.0725 (derived)[4]
0.233±0.047[7]
0.26±0.12[6]
LS[9] · S (derived)[4]
Absolute magnitude (H)12.8[3][4][7] · 12.86±0.14[9]
13.19[6]


3267 Glo, provisional designation 1981 AA, is an eccentric Phocaean asteroid and sizable Mars-crosser from the inner regions of the asteroid belt, approximately 6.4 kilometers (4.0 miles) in diameter. It was discovered on 3 January 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona.[1] It was later named after American astronomer Eleanor Helin.[2]

Orbit and classification

Glo is an eccentric member of the Phocaea family (701),[5] that orbits the Sun in the inner asteroid belt at a distance of 1.6–3.0 AU once every 3 years and 7 months (1,299 days; semi-major axis of 2.33 AU). Its orbit has an eccentricity of 0.30 and an inclination of 24° with respect to the ecliptic.[3]

The body's observation arc begins with its official discovery observation at Anderson Mesa in January 1981.[1]

Physical characteristics

The asteroid has been characterized as an L- and S-type asteroid by Pan-STARRS large-scale survey.[9]

Spectral type

PanSTARRS' photometric survey, has characterized Glo as a LS-type asteroid, a transitional spectral type between the common S-type and rather rare L-type asteroids,[9] which have very different albedos, from as low as 0.039 to as high as 0.383.[10]

Rotation period

A rotational lightcurve of Glo was obtained from photometric observations by Czech astronomer Petr Pravec at Ondřejov Observatory in January 2006. Lightcurve analysis gave a well-defined rotation period of 6.8782 hours with a brightness variation of 0.33 magnitude ({{{1}}}).[4]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Glo measures 6.45 and 13.56 kilometers in diameter and its surface has an albedo of 0.061 and 0.26, respectively.[6][8] The Collaborative Asteroid Lightcurve Link agrees with IRAS and derives a similar albedo of 0.0725 and a diameter of 13.59 kilometers with an absolute magnitude of 12.8.[4][lower-alpha 1]

Naming

This minor planet was named in honor of Eleanor "Glo" Helin (1932–2009), who was a planetary scientist at JPL and a prolific discoverer of minor planets.[2] The official naming citation was published by the Minor Planet Center on 13 February 1987 (M.P.C. 11641).[11]

Notes

  1. ↑ 1.0 1.1 Lightcurve plot of 3267 Glo giving a rotation period of 6.8782 hours with an amplitude of 0.0329 magnitude, taken from unpublished data of the Ondrejov Asteroid Photometry Project. Summary figures at the LCDB.

References

  1. ↑ 1.0 1.1 1.2 1.3 "3267 Glo (1981 AA)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=3267. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(3267) Glo". Dictionary of Minor Planet Names – (3267) Glo. Springer Berlin Heidelberg. p. 272. doi:10.1007/978-3-540-29925-7_3268. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 "JPL Small-Body Database Browser: 3267 Glo (1981 AA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003267. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 "LCDB Data for (3267) Glo". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=3267%7CGlo. 
  5. ↑ 5.0 5.1 "Asteroid 3267 Glo – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=3267+Glo#Asteroid%203267%20GloEAR-A-VARGBDET-5-NESVORNYFAM-V3.0. 
  6. ↑ 6.0 6.1 6.2 6.3 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. 
  7. ↑ 7.0 7.1 7.2 Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data". Astronomy and Astrophysics 603: 8. doi:10.1051/0004-6361/201629917. Bibcode: 2017A&A...603A..55A. 
  8. ↑ 8.0 8.1 8.2 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. 
  9. ↑ 9.0 9.1 9.2 9.3 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (15 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. 
  10. ↑ "JPL Small-Body Database Search Engine: "spectral type = L (SMASSII)"". JPL Solar System Dynamics. https://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;OBJ_field=0;ORB_field=0;combine_mode=OR;c1_group=OBJ;c1_item=Ay;c1_op=%3D;c1_value=L;c2_group=OBJ;c2_item=Ax;c2_op=%3D;c2_value=L;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhArAxAy;.cgifields=format_option;.cgifields=ast_orbit_class;.cgifields=combine_mode;.cgifields=table_format;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=com_orbit_class&query=1&c_sort=ArAA. 
  11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 



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