1826 Miller

1826 Miller, provisional designation 1955 RC1, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter.

1826 Miller
Discovery [1]
Discovered byIndiana University
(Indiana Asteroid Program)
Discovery siteGoethe Link Obs.
Discovery date14 September 1955
Designations
(1826) Miller
Named after
John A. Miller (entrepreneur)[2]
1955 RC1 · 1929 RV
1940 WF · 1950 TD2
1952 BL1 · 1962 AA
1971 TU2
main-belt · (outer)
Eos [3][4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc75.74 yr (27,665 days)
Aphelion3.2492 AU
Perihelion2.7420 AU
2.9956 AU
Eccentricity0.0847
5.18 yr (1,894 days)
272.27°
0° 11m 24.36s / day
Inclination9.2276°
274.23°
163.29°
Physical characteristics
Dimensions19.746±0.075 km[5]
23.099±0.190[6]
24.31 km (derived)[3]
24.41±1.9 km[7]
26.34±0.95 km[8]
6.77±0.01 h (dated)[9]
30.049±0.001 h[10]
0.1085 (derived)[3]
0.111±0.009[8]
0.1294±0.022[7]
0.176±0.025[6]
0.1964±0.0311[5]
S (assumed)[3]
10.90[5][7][8] · 11.1[1][3]

    It was discovered on 14 September 1955, by the Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States, and named after American entrepreneur John Miller.[2][11]

    Orbit and classification

    Miller is a member of the Eos family (606), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.[4][12]:23

    The asteroid orbits the Sun in the outer main-belt at a distance of 2.7–3.2 AU once every 5 years and 2 months (1,894 days). Its orbit has an eccentricity of 0.08 and an inclination of 9° with respect to the ecliptic.[1] First identified as 1929 RV at Simeis Observatory, Miller's first used observation was its identification as 1940 WF at Turku in 1940, which extends its observation arc by 15 years prior to its official discovery observation.[11]

    Physical characteristics

    Miller is an assumed stony S-type asteroid.[3]

    Rotation period

    In March 2010, a rotational lightcurve of Miller was obtained from photometric observation taken at Oakley Southern Sky Observatory in Australia. It gave a longer-than average rotation period of 30.049 hours with a brightness variation of 0.08 magnitude (U=2),[10] superseding a previous result of 6.77 hours by amateur astronomer René Roy, who derived it from a fragmentary lightcurve obtained in December 2002 (U=1).[9]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Milller measures between 19.74 and 26.34 kilometers in diameter, and its surface has an albedo between 0.111 and 0.196.[5][6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1085 and a diameter of 24.31 kilometers with an absolute magnitude of 11.1.[3] The asteroid was also involved in the asteroid occultation of a 10th magnitude star in the constellation Cancer in April 2004.

    Naming

    It was named in honor of American entrepreneur John A. Miller (1872–1941), founder of the Astronomy Department at Indiana University and first director of the Kirkwood Observatory, which he built and named for his former teacher. He also built the Sproul Observatory at Swarthmore College in the U.S state of Pennsylvania (also see 1578 Kirkwood).[2] The official naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4236).[13]

    References
    1. "JPL Small-Body Database Browser: 1826 Miller (1955 RC1)" (2016-08-27 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2017.
    2. Schmadel, Lutz D. (2007). "(1826) Miller". Dictionary of Minor Planet Names – (1826) Miller. Springer Berlin Heidelberg. p. 146. doi:10.1007/978-3-540-29925-7_1827. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1826) Miller". Asteroid Lightcurve Database (LCDB). Retrieved 15 December 2016.
    4. "Asteroid 1826 Miller – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    5. Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    6. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 15 December 2016.
    7. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 17 October 2019.
    8. 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 17 October 2019. (online, AcuA catalog p. 153)
    9. Behrend, Raoul. "Asteroids and comets rotation curves – (1826) Miller". Geneva Observatory. Retrieved 15 December 2016.
    10. 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 15 December 2016.
    11. "1826 Miller (1955 RC1)". Minor Planet Center. Retrieved 15 December 2016.
    12. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
    13. Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

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