8992 Magnanimity
Discovery [1]
Discovered byPurple Mountain Obs.
Discovery siteNanking, China
Discovery date14 October 1980
Designations
(8992) Magnanimity
Named after
Magnanimity
(in memory of 9/11)[2]
1980 TE7 · 1954 RE
1980 TJ11 · 1991 TV
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc61.89 yr (22,606 days)
Aphelion2.8916 AU
Perihelion1.8886 AU
2.3901 AU
Eccentricity0.2098
3.70 yr (1,350 days)
39.560°
0° 16m 0.12s / day
Inclination7.9283°
188.65°
133.59°
Physical characteristics
Dimensions6.21 km (calculated)[3]
20.719±0.001 h[lower-alpha 1]
0.20 (assumed)[3]
S [3]
13.4[1][3] · 13.70±0.72[4]

    8992 Magnanimity, provisional designation 1980 TE7, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.

    The asteroid was discovered on 14 October 1980, by a team of astronomers at the Purple Mountain Observatory in Nanking, China.[5] It was named in response to the September 11 attacks.[2]

    Orbit and classification

    Magnanimity orbits the Sun in the inner main-belt at a distance of 1.9–2.9 AU once every 3 years and 8 months (1,350 days). Its orbit has an eccentricity of 0.21 and an inclination of 8° with respect to the ecliptic.[1] In September 1954, it was first identified as 1954 RE at Goethe Link Observatory, extending the body's observation arc by 26 years prior to its official discovery observation at Nanking.[5]

    Physical characteristics

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 6.2 kilometers.[3] A rotational lightcurve of Magnanimity was obtained from photometric observations by Czech astronomer Petr Pravec at Ondřejov Observatory in September 2013. It gave a well-defined and longer-than-average rotation period of 20.719 hours with a brightness variation of 0.25 magnitude (U=3).[lower-alpha 1]

    Naming

    This minor planet was named Magnanimity in response to the September 11 attacks. As a commemorative gesture, the IAU's Committee for the Nomenclature of Small Bodies chose three objects discovered from observatories on different continents and christened them with names representing some of the most basic and universal human values. The other two selections were 8990 Compassion (discovered from Europe) and 8991 Solidarity (discovered from South America). The approved naming citation was published by the Minor Planet Center on 2 October 2001 (M.P.C. 43684).[6]

    Notes

    1. 1 2 Pravec (2013): lightcurve plot of (8992) Magnanimity with a rotation period 20.719±0.001 hours with a brightness amplitude of 0.25 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) and Pravec, P.; Wolf, M.; Sarounova, L. (2013)

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 8992 Magnanimity (1980 TE7)" (2016-07-27 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2017.
    2. 1 2 Schmadel, Lutz D. (2007). "(8992) Magnanimity". Dictionary of Minor Planet Names – (8992) Magnanimity. Springer Berlin Heidelberg. p. 674. doi:10.1007/978-3-540-29925-7_7319. ISBN 978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (8992) Magnanimity". Asteroid Lightcurve Database (LCDB). Retrieved 10 July 2016.
    4. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 10 July 2016.
    5. 1 2 "8992 Magnanimity (1980 TE7)". Minor Planet Center. Retrieved 10 July 2016.
    6. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 July 2016.
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