(15874) 1996 TL66

Last updated
(15874) 1996 TL66
Discovery [1]
Discovered by D. C. Jewitt
J. X. Luu
J. Chen
C. A. Trujillo
Discovery site Mauna Kea Obs.
Discovery date9 October 1996
Designations
(15874) 1996 TL66
1996 TL66
TNO [2]  · SDO [3]
distant [4]
Orbital characteristics [2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 2
Observation arc 5883 days (16.11 yr)
Aphelion 131.75  AU (19.710  Tm)
Perihelion 35.057 AU (5.2445 Tm)
83.403 AU (12.4769 Tm)
Eccentricity 0.57967
761.70 yr (278211 d)
6.8505°
0° 0m 4.658s / day
Inclination 24.006°
217.82°
184.79°
Physical characteristics
339±20 km [5]
575±115 km [6]
12  h (0.50  d) [2]
0.110+0.021
−0.015 [5]
0.035+0.02
−0.01 [6]
B–V = 0.687±0.072 [7]
V–R = 0.369±0.052 [7]
21 [8]
5.4 [2]

    (15874) 1996 TL66 (provisional designation 1996 TL66) is a trans-Neptunian object of the scattered disc orbiting in the outermost region of the Solar System. [2] [3]

    Contents

    The Spitzer Space Telescope has estimated this object to be about 575 kilometres (357 mi) in diameter, [6] but 2012 estimates from the Herschel Space Observatory estimate the diameter as closer to 339 kilometres (211 mi). [5] It is not a detached object, since its perihelion (closest approach to the Sun) is under the influence of Neptune. [3] Light-curve-amplitude analysis suggests that it is a spheroid. [9]

    Discovery

    Discovered in 1996 by David C. Jewitt et al., it was the first object to be categorized as a scattered-disk object (SDO), although (48639) 1995 TL8 , discovered a year earlier, was later recognised as a scattered-disk object. It was considered one the largest known trans-Neptunian objects at the time of the discovery, being placed second after Pluto. [10] It came to perihelion in 2001. [2]

    Orbit and size

    1996 TL66's orbit 1996 TL66 orbit.gif
    1996 TL66's orbit

    (15874) 1996 TL66 orbits the Sun with a semi-major axis of 83.9  AU [2] but is currently only 35 AU from the Sun with an apparent magnitude of 21. [8] In 2007, the Spitzer Space Telescope estimated it to have a low albedo with a diameter of about 575±115 km. [6] More-recent measurements in 2012 by the 'TNOs are Cool' research project and reanalysis of older data have resulted in a new estimate of these figures. [5] It is now assumed that it has a higher albedo and the diameter was revised downward to 339±20 km. Light-curve-amplitude analysis shows only small deviations, suggesting (15874) 1996 TL66 has a spheroidal shape with small albedo spots. [9] It was considered a possible dwarf planet by Gonzalo Tancredi. [9]

    Related Research Articles

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    <span class="mw-page-title-main">38628 Huya</span> Binary trans-Neptunian object

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    <span class="nowrap">(90568) 2004 GV<sub>9</sub></span>

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    <span class="nowrap">(55565) 2002 AW<sub>197</sub></span> Classical Kuiper belt object

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    <span class="nowrap">(55637) 2002 UX<sub>25</sub></span> Spitzer dwarf-planet candidate

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    <span class="nowrap">(145452) 2005 RN<sub>43</sub></span> Classical Kuiper belt object

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    (24835) 1995 SM55 (provisional designation 1995 SM55) is a trans-Neptunian object and member of the Haumea family that resides in the Kuiper belt, located in the outermost region of the Solar System. It was discovered on 19 September 1995, by American astronomer Nichole Danzl of the Spacewatch program at Kitt Peak National Observatory near Tucson, Arizona, in the United States. It measures approximately 200 kilometers in diameter and was the second-brightest known object in the Kuiper belt, after Pluto, until 1996 TO66 was discovered.

    (35671) 1998 SN165 (provisional designation 1998 SN165) is a trans-Neptunian object from the Kuiper belt located in the outermost region of the Solar System. It was discovered on 23 September 1998, by American astronomer Arianna Gleason at the Kitt Peak National Observatory near Tucson, Arizona. The cold classical Kuiper belt object is a dwarf planet candidate, as it measures approximately 400 kilometers (250 miles) in diameter. It has a grey-blue color (BB) and a rotation period of 8.8 hours. As of 2021, it has not been named.

    <span class="nowrap">(40314) 1999 KR<sub>16</sub></span>

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    <span class="nowrap">(532037) 2013 FY<sub>27</sub></span> Scattered disc object

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    <span class="nowrap">(82158) 2001 FP<sub>185</sub></span>

    (82158) 2001 FP185 (provisional designation 2001 FP185) is a highly eccentric trans-Neptunian object from the scattered disc in the outermost part of the Solar System, approximately 330 kilometers in diameter. It was discovered on 26 March 2001, by American astronomer Marc Buie at Kitt Peak National Observatory in Arizona, United States.

    <span class="nowrap">(524366) 2001 XR<sub>254</sub></span>

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    References

    1. ↑ "MPEC 1997-B18: 1996 TL66". Minor Planet Center. 1997-01-30. Retrieved 2011-07-05.
    2. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 15874 (1996 TL66)" (2006-07-30 last obs). Retrieved 5 April 2016.
    3. 1 2 3 Marc W. Buie (2006-07-30). "Orbit Fit and Astrometric record for 15874". SwRI (Space Science Department). Retrieved 2009-01-22.
    4. ↑ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 2009-01-22.
    5. 1 2 3 4 Santos-Sanz, P.; et al. (2012). ""TNOs are Cool": A Survey of the Transneptunian Region IV. Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory-PACS". Astronomy & Astrophysics . 541: A92. arXiv: 1202.1481 . Bibcode:2012A&A...541A..92S. doi:10.1051/0004-6361/201118541. S2CID   118600525.
    6. 1 2 3 4 John Stansberry; Will Grundy; Mike Brown; Dale Cruikshank; John Spencer; David Trilling; et al. (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv: astro-ph/0702538 .
    7. 1 2 Hainaut, O. R.; Boehnhardt, H.; Protopapa, S. (October 2012). "Colours of minor bodies in the outer solar system. II. A statistical analysis revisited". Astronomy and Astrophysics. 546: 20. arXiv: 1209.1896 . Bibcode:2012A&A...546A.115H. doi:10.1051/0004-6361/201219566. S2CID   54776793.
    8. 1 2 "AstDys (15874) 1996TL66 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-02-10.
    9. 1 2 3 Tancredi, G., & Favre, S. (2008) Which are the dwarfs in the Solar System?. Depto. Astronomía, Fac. Ciencias, Montevideo, Uruguay; Observatorio Astronómico Los Molinos, MEC, Uruguay. Retrieved 10-08-2011
    10. ↑ "1996 TO66 – Another Large Transneptunian Object". Harvard-Smithsonian Center for Astrophysics. 19 June 1997. Retrieved 18 July 2020.
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