2102 Tantalus

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Tantalus
Discovery
Discovered by C. Kowal
Discovery site Palomar Observatory
Discovery date27 December 1975
Designations
(2102) Tantalus
Pronunciation /ˈtæntələs/
Named after
 Tantalus
1975 YA
PHA [1]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 38.63 yr (14111 days)
Aphelion 1.675969247626000  AU (250.72143080353  Gm)
Perihelion 0.9041343191800040 AU (135.25656897612 Gm)
1.290051783403 AU (192.9889998898 Gm)
Eccentricity .299148816495564
1.47 yr (535.19 d)
85.78643003020903°
0° 40m 21.563s / day
Inclination 64.00535930263230°
94.36993941983230°
61.55509931046220°
Earth  MOID 0.0430913 AU (6.44637 Gm) [1]
Physical characteristics
Dimensions 2-4 km [2]
2.384  h (0.0993  d) [1]
Q [1]
16.0 [1]

    2102 Tantalus (1975 YA) is an Apollo asteroid discovered on December 27, 1975, by C. Kowal at Palomar Observatory. [1] It is a Q-type asteroid. [1]

    2102 Tantalus is a potentially hazardous asteroid (PHA) because its minimum orbit intersection distance (MOID) is less than 0.05 AU and its diameter is greater than 150 meters. The Earth-MOID is 0.0439  AU (6,570,000  km ; 4,080,000  mi ). [1] Its orbit is well-determined for the next several hundred years.

    It will pass 0.04439  AU (6,641,000  km ; 4,126,000  mi ) from Earth on 2038-Dec-27, which is just slightly closer than the 1975-Dec-26 approach of 0.046 AU. [1] The asteroid is about 2–4 km in diameter. [2]

    The shape of 2102 Tantalus is estimated to be roughly spherical in outline and fairly symmetrical; the surface is thought to be covered in a fine-grained regolith. [3]

    References

    1. 1 2 3 4 5 6 7 8 9 10 "JPL Small-Body Database Browser: 2102 Tantalus". Jet Propulsion Laboratory . Retrieved 16 April 2016.
    2. 1 2 "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 10 May 2015.
    3. ↑ Rożek, Agata; Lowry, Stephen C.; Rozitis, Benjamin; Dover, Lord R.; Taylor, Patrick A.; Virkki, Anne; Green, Simon F.; Snodgrass, Colin; Fitzsimmons, Alan; Campbell-White, Justyn; Sajadian, Sedighe; Bozza, Valerio; Burgdorf, Martin J.; Dominik, Martin; Figuera Jaimes, R.; Hinse, Tobias C.; Hundertmark, Markus; Jørgensen, Uffe G.; Longa-Peña, Penélope; Rabus, Markus; Rahvar, Sohrab; Skottfelt, Jesper; Southworth, John (2022). "Physical properties of near-Earth asteroid (2102) Tantalus from multiwavelength observations". Monthly Notices of the Royal Astronomical Society. 515 (3): 4551–4564. arXiv: 2206.14306 . doi: 10.1093/mnras/stac1835 .



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