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Contents

   



(Top)
  


1 Orbit and classification  




2 Physical characteristics  


2.1  Rotation period  




2.2  Diameter and albedo  






3 References  




4 External links  













2010 WG9






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From Wikipedia, the free encyclopedia
  

2010 WG9
Discovery[1]
Discovered byLaSilla–Quest Variability Srvy.
Discovery siteLa Silla Observatory
Discovery date30 November 2010
(discovery: first observation only)
Designations

MPC designation

2010 WG9

Minor planet category

TNO[1] · centaur · distant[2]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter3
Observation arc6.22 yr (2,271 days)
Aphelion87.037 AU
Perihelion18.765 AU

Semi-major axis

52.901 AU
Eccentricity0.6453

Orbital period (sidereal)

384.77 yr (140,538 days)

Mean anomaly

10.821°

Mean motion

0° 0m 9.36s / day
Inclination70.331°

Longitude of ascending node

92.065°

Argument of perihelion

293.00°
Physical characteristics
Dimensions100.81 km (calculated)[3]
112.7±61.9km[4]

Synodic rotation period

263.8±0.1 h[5]

Geometric albedo

0.074±0.080[4]
0.10 (assumed)[3]

Spectral type

B–R = 1.10[6]
B–V = 0.798±0.034[5]
V–R = 0.520±0.018[5]

Absolute magnitude (H)

8.1[1][3]

2010 WG9 is a high inclination trans-Neptunian object and slow rotator from the outer Solar System, approximately 100 kilometers in diameter.[1] It was first observed at ESO's La Silla Observatory in northern Chile on 30 November 2010.[2]

Orbit and classification

[edit]

2010 WG9 orbits the Sun at a distance of 18.8–87.0 AU once every 384 years and 9 months (140,538 days). Its orbit has an eccentricity of 0.65 and an inclination of 70° with respect to the ecliptic.[1]

As of October 2019, it is one of six known objects with inclination (i) > 60° and perihelion (q) > 15 AU, along with the first discovered 2008 KV42.[7]

Physical characteristics

[edit]

Rotation period

[edit]

A rotational lightcurveof2010 WG9 was obtained from photometric observations by the LaSilla–Quest Variability Survey at La Silla in Chile. Lightcurve analysis gave a rotation period of 263.8 hours with a brightness amplitude of 0.14 magnitude (U=2).[5] It belongs to the Top 200 slowest rotators known to exist.

Diameter and albedo

[edit]

It measures 112.7 kilometers in diameter and its surface has an albedo of 0.074.[4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.10 and calculates a diameter of 100.81 kilometers based on an absolute magnitude of 8.1.[3]

References

[edit]
  1. ^ a b c d e f "JPL Small-Body Database Browser: (2010 WG9)" (2016-03-13 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
  • ^ a b "2010 WG9". Minor Planet Center. Retrieved 25 July 2017.
  • ^ a b c d "LCDB Data for (2010)". Asteroid Lightcurve Database (LCDB). Retrieved 25 July 2017.
  • ^ a b c Bauer, James M.; Grav, Tommy; Blauvelt, Erin; Mainzer, A. K.; Masiero, Joseph R.; Stevenson, Rachel; et al. (August 2013). "Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations". The Astrophysical Journal. 773 (1): 11. arXiv:1306.1862. Bibcode:2013ApJ...773...22B. doi:10.1088/0004-637X/773/1/22. S2CID 51139703.
  • ^ a b c d Rabinowitz, David; Schwamb, Megan E.; Hadjiyska, Elena; Tourtellotte, Suzanne; Rojo, Patricio (July 2013). "The Peculiar Photometric Properties of 2010 WG9: A Slowly Rotating Trans-Neptunian Object from the Oort Cloud". The Astronomical Journal. 146 (1): 10. arXiv:1305.5134. Bibcode:2013AJ....146...17R. doi:10.1088/0004-6256/146/1/17. S2CID 119206739.
  • ^ "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 26 July 2017.
  • ^ "Custom query: i = 60 and q = 15+". Minor Planet Center. Retrieved 26 July 2017.
    • [edit]

    Retrieved from "https://en.wikipedia.org/w/index.php?title=2010_WG9&oldid=1187132574"
    Categories: 
    ●Centaurs (small Solar System bodies)
     ●Trans-Neptunian objects
     ●Damocloids
     ●Scattered disc and detached objects
     ●Minor planet object articles (unnumbered)
     ●Slow rotating minor planets
     ●Astronomical objects discovered in 2010
     Hidden categories: 
    ●Use dmy dates from February 2018
     ●JPL Small-Body Database ID same as Wikidata
     ●Articles with JPL SBDB identifiers
      


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