11714 Mikebrown

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11714 Mikebrown
Discovery [1]
Discovered by LONEOS
Discovery site Anderson Mesa Stn.
Discovery date 28 April 1998
MPC designation (11714) Mikebrown
Named after
Michael E. Brown
(minor planet discoverer)[2]
1998 HQ51 · 1977 RX8
1986 TH5 · 1986 TW10
1986 UR1
main-belt[1] · (central)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 38.94 yr (14,224 days)
Aphelion 3.3555 AU
Perihelion 1.9897 AU
2.6726 AU
Eccentricity 0.2555
4.37 yr (1,596 days)
0° 13m 32.16s / day
Inclination 3.0156°
Physical characteristics
Mean diameter
4.451±0.945 km[3]

11714 Mikebrown, provisional designation 1998 HQ51, is a stony asteroid from the central region of the asteroid belt, approximately 4.5 kilometers in diameter.

It was discovered on 28 April 1998, by astronomers of the Lowell Observatory Near-Earth Object Search (LONEOS) at the U.S. Anderson Mesa Station near Flagstaff, Arizona, and later named after American astronomer Michael Brown.[2][4]

Orbit and classification[edit]

In January 2010, Mikebrown came to opposition with Mercury, Earth, and Mars.

Mikebrown orbits the Sun in the central main-belt at a distance of 2.0–3.4 AU once every 4 years and 4 months (1,596 days). Its orbit has an eccentricity of 0.26 and an inclination of 3° with respect to the ecliptic.[1]

On 15 May 2012, Mikebrown came within about 14.8 Gm (0.099 AU) of asteroid 625 Xenia.[5]

It was first observed as 1977 RX8 Palomar Observatory in 1977, extending the body's observation arc by 21 years prior to its official discovery observation at Anderson Mesa.[4]

Physical characteristics[edit]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Mikebrown measures 4.451 kilometers in diameter and its surface has an albedo of 0.246, which is typical for stony S-type asteroids.[3]

It has an absolute magnitude of 14.1.[1] As of 2017, no rotational lightcurve of Mikebrown has been obtained from photometric observations, and the body's rotation period and shape remains unknown.[1][6]


This minor planet was named after American astronomer Michael E. Brown (born 1965), a professor of astronomy at Caltech in California, and best known for his discoveries of trans-Neptunian objects, in particular the dwarf planet 136199 Eris. He is also the author of the popular book How I Killed Pluto and Why It Had It Coming, published in 2010.[2] The official naming citation was published on 24 July 2002 (M.P.C. 46104).[7]


  1. ^ a b c d e f g "JPL Small-Body Database Browser: 11714 Mikebrown (1998 HQ51)" (2016-08-18 last obs.). Jet Propulsion Laboratory. Retrieved 5 July 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (11714) Mikebrown. Springer Berlin Heidelberg. p. 767. ISBN 978-3-540-00238-3. Retrieved 25 April 2017. 
  3. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 25 April 2017. 
  4. ^ a b "11714 Mikebrown (1998 HQ51)". Minor Planet Center. Retrieved 25 April 2017. 
  5. ^ "Mikebrown close approaches less than 15Gm". Retrieved 2010-01-29.  (Solex 10) Archived 2009-04-29 at WebCite
  6. ^ "LCDB Data for (11714) Mikebrown". Asteroid Lightcurve Database (LCDB). Retrieved 25 April 2017. 
  7. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 25 April 2017. 

External links[edit]