1604 Tombaugh

1604 Tombaugh
Discovery [1]
Discovered by C. O. Lampland
K. Newman
Discovery site Lowell Observatory
Discovery date 24 March 1931
Designations
MPC designation 1604 Tombaugh
Named after
 Clyde Tombaugh
(astronomer)[2]
1931 FH · 1930 DX
1933 SA1 · 1936 FA
1937 JH · 1941 CF
1943 OE · 1948 ME
1949 ST1 · A920 EC
main-belt · Eos [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 96.11 yr (35104 days)
Aphelion 3.3290 AU (498.01 Gm)
Perihelion 2.7161 AU (406.32 Gm)
3.0226 AU (452.17 Gm)
Eccentricity 0.10140
5.25 yr (1919.4 d)
284.30°
0° 11m 15.216s / day
Inclination 9.3953°
309.10°
38.279°
Earth MOID 1.7145 AU (256.49 Gm)
Jupiter MOID 2.04627 AU (306.118 Gm)
Jupiter Tisserand parameter 3.218
Physical characteristics
Dimensions 32.33 km[4]
28.78±0.53 km[5]
32.25 km (derived)[3]
Mean radius
 16.165 ± 1.1 km
7.047 h (0.2936 d)[1][6]
8.2 h[7]
7.04 h[8]
6.15 h[9]
7.056±0.001 h[10]
0.1038[4]
0.138±0.006[5]
0.0933 (derived)[3]
0.1038 ± 0.016[1]
B–V = 0.751
U–B = 0.373
XSCU (Tholen)
Xc (SMASS)
X [3]
10.4

    1604 Tombaugh, provisional designation 1931 FH, is an asteroid from the outer region of the asteroid belt, about 32 kilometers in diameter. It was discovered by American astronomer Carl Otto Lampland at Lowell Observatory in Flagstaff, Arizona, on March 24, 1931.[11]

    The X-type asteroid is a member of the Eos family and classified as a XSCU and Xc subtype in the Tholen and SMASS taxonomy, respectively. It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,920 days). Its orbit shows an eccentricity of 0.10 and is tilted by 9 degrees to the plane of the ecliptic. Its rotation has been measured several times with resulting periods between 6 and 8 hours.[6][7][8][9][10] Observations by the Infrared Astronomical Satellite, IRAS, and by the Japanese satellite Akari, measured an albedo of 0.10 and 0.14, respectively.[4][5]

    The asteroid was named after American astronomer Clyde Tombaugh (1906–1997), famous for his discovery of Pluto in 1930. The Lowell Observatory named the body on the occasion of a symposium on Pluto, held in 1980. When Tombaugh examined the photographic plates during the trans-Saturnian search program at the Lowell Observatory, he also marked over 4,000 minor planets on these plates.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1604 Tombaugh (1931 FH)" (2015-06-13 last obs.). Jet Propulsion Laboratory. Retrieved 25 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1604) Tombaugh. Springer Berlin Heidelberg. p. 127. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 "LCDB Data for (1604) Tombaugh". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved November 2015.
    5. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved November 2015.
    6. 1 2 Albers, Kenda; Kragh, Katherine; Monnier, Adam; Pligge, Zachary; Stolze, Kellen; West, Josh; et al. (October 2010). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2009 October thru 2010 April". The Minor Planet Bulletin 37 (4): 152–158. Bibcode:2010MPBu...37..152A. ISSN 1052-8091. Retrieved November 2015.
    7. 1 2 Lagerkvist, C.-I. (March 1978). "Photographic photometry of 110 main-belt asteroids". Astronomy and Astrophysics Supplement Series: 361–381. Bibcode:1978A&AS...31..361L. Retrieved November 2015.
    8. 1 2 Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved November 2015.
    9. 1 2 Sárneczky, K.; Szabó, Gy.; Kiss, L. L. (June 1999). "CCD observations of 11 faint asteroids". Astronomy and Astrophysics Supplement. Bibcode:1999A&AS..137..363S. doi:10.1051/aas:1999251. Retrieved November 2015.
    10. 1 2 Strabla, Luca; Quadri, Ulisse; Girelli, Robert (April 2013). "Asteroid Observed from Bassano Bresciano Observatory 2012 August-September". The Minor Planet Bulletin 40 (2): 83–84. Bibcode:2013MPBu...40...83S. ISSN 1052-8091. Retrieved November 2015.
    11. ↑ "1604 Tombaugh (1931 FH)". Minor Planet Center. Retrieved November 2015.

    External links


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