2002 XV ₉₃

Asteroid 2002 XV 93
Properties of the orbit ( animation ) Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type	Plutino or "Distant Object"
Major semi-axis	39.115  AU
eccentricity	0.125
Perihelion - aphelion	34.224 AU - 44.006 AU
Inclination of the orbit plane	13.3 °
Length of the ascending node	19.1 °
Argument of the periapsis	166.8 °
Time of passage of the perihelion	April 22, 2071
Sidereal period	244 a 7.6 M
Physical Properties
Medium diameter	${\displaystyle 549{,}2_{-23,0}^{+21,7}\,\mathrm {km} }$
Albedo	${\displaystyle 0{,}040_{-0,015}^{+0,020}\mathrm {} }$
Absolute brightness	5.42 ± 0.46 mag
Spectral class	BV = 0.72 ± 0.02 V-R = 0.37 ± 0.02 B-R = 1.09 ± 0.03
history
Explorer	Palomar observatory
Date of discovery	December 10, 2002
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

2002 XV ₉₃ is a large trans-Neptunian object , which is classified as Plutino in terms of its orbital dynamics , but also more generally as a "Distant Object" . Because of its size, the asteroid is a dwarf planet candidate .

discovery

2002 XV ₉₃ was on 10 December 2002 by a team of astronomers at Palomar Observatory ( California discovered). The discovery was announced on January 5, 2003, along with (78799) 2002 XW ₉₃ and (119979) 2002 WC ₁₉ .

After its discovery, in 2002 XV _{93 could be} retrospectively identified in photos taken at the Palomar Observatory on October 16, 1990, and so its observation period was extended by twelve years in order to calculate its orbit more precisely. In September 2018, there were a total of 95 observations over a period of 26 years. The last observation so far was carried out in February 2016 as part of the Pan-STARRS program.

properties

Orbit

2002 XV ₉₃ orbits the sun in 244.63 years in an elliptical orbit between 34.22  AU and 44.01 AU from its center. The orbit eccentricity is 0.125, the orbit is inclined 13.28 ° to the ecliptic . The planetoid is currently 38.59 AU from the Sun and 37.85 AU from Earth (as of February 1, 2019). He will next pass perihelion in 2071, so the last perihelion should have occurred in 1826.

Marc Buie ( DES ) classifies him as Plutino ; the Minor Planet Center initially also, but now runs it as a “Distant Object” .

size

A diameter of around 549 km is currently assumed, based on a reflectivity of 4% and an absolute brightness of 5.4  ^m . This diameter determination was carried out after investigations with the Herschel space telescope . The apparent magnitude of 2002 XV ₉₃ is 20.96  ^m .

Since it can be assumed that 2002 XV ₉₃ is in hydrostatic equilibrium due to its size and must therefore be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown believes that 2002 XV ₉₃ is likely a dwarf planet.

Provisions of the diameter for 2002 XV ₉₃

year	Dimensions km	source
2012	549.2 +21.7−23.0	Mommert et al. a.
2018	564.0	Brown
The most precise determination is marked in bold .

See also

• List of trans-Neptunian objects
• List of dwarf planets of the solar system
• List of asteroids
• List of moons from asteroids

Web links

• Precovery photos from 2002 XV ₉₃
• How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
• Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)

Individual evidence

1. ^ ^{A b} Marc W. Buie : Orbit Fit and Astrometric record for 02XV93 . SwRI (Space Science Department). Retrieved February 2, 2019.
2. ↑ ^{a b c} 2002 XV93 at the IAU Minor Planet Center (English)
3. ^ S. Tegler: Kuiper Belt Object Magnitudes and Surface Colors . February 2, 2007. Accessed February 1, 2019.
4. ↑ MPC : MPEC 2003-A25: 2002 WC19, 2002 XV93, 2002 XW93 . IAU . January 5, 2003. Retrieved February 2, 2019.
5. ↑ 2002 XV93 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 2, 2019.
6. ↑ MPC : MPEC 2010-O39: Distant Minor Planets (2010 AUG. 12.0 TT) . IAU . August 12, 2010. Retrieved February 2, 2019.
7. ↑ 2002 XV93 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
8. ↑ ^{a b} Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved February 2, 2019.
9. ↑ M. Mommert et al. a .: TNOs are Cool: A survey of the trans-Neptunian region V. Physical characterization of 18 Plutinos using Herschel PACS observations (PDF) . In: Astronomy and Astrophysics . 541, no.A93 , February 16, 2012. arxiv : 1202.3657 . bibcode : 2012A & A ... 541A..93M . doi : 10.1051 / 0004-6361 / 201118562 .