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Discovery [1]
Discovered by B. A. Skiff
Discovery site Anderson Mesa Stn.
Discovery date 3 May 1984
MPC designation (3325) TARDIS
Named after
(fictional time machine)[2]
1984 JZ · 1958 VB1
1969 TP3 · 1975 VC8
1975 WF1
main-belt[1] · (outer)
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 58.00 yr (21,184 days)
Aphelion 3.2270 AU
Perihelion 3.1395 AU
3.1832 AU
Eccentricity 0.0138
5.68 yr (2,074 days)
0° 10m 24.6s / day
Inclination 22.220°
Physical characteristics
Dimensions 28.238±0.469[3]
29.66±1.2 km (IRAS:9)[4]
0.0553±0.005 (IRAS:9)[4]

3325 TARDIS, provisional designation 1984 JZ, is a dark asteroid from the outer region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 3 May 1984, by American astronomer Brian Skiff at Lowell's Anderson Mesa Station, Arizona, United States.[5]

The asteroid orbits the Sun at a distance of 3.1–3.2 AU once every 5 years and 8 months (2,074 days). Its orbit has an eccentricity of 0.01 and an inclination of 22° with respect to the ecliptic.[1] The first precovery was taken at the U.S. Goethe Link Observatory in 1958, extending the asteroid's observation arc by 26 years prior to its discovery.[5]

According to the survey carried out by the Infrared Astronomical Satellite IRAS and NASA's NEOWISE mission, the asteroid measures 28.2 and 29.7 kilometers in diameter, and its surface has a low albedo of 0.055 and 0.067, respectively.[3][4] Albedos between 0.05 and 0.06 are typical for carbonaceous asteroids of the outer main-belt. As of 2016, no rotational light-curves have been obtained and the asteroid's period and shape still remains unknown.

It is named after the acronym TARDIS (Time And Relative Dimensions In Space), the space and time travel vehicle used by the Doctor in the British science fiction television series Doctor Who. The fictional time machine looks like a London police telephone box from the 1960s.[2] Naming citation was published on 11 March 1990 (M.P.C. 16041).[6]


  1. ^ a b c d e "JPL Small-Body Database Browser: 3325 TARDIS (1984 JZ)" (2016-11-10 last obs.). Jet Propulsion Laboratory. Retrieved 5 December 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3325) TARDIS. Springer Berlin Heidelberg. p. 277. ISBN 978-3-540-00238-3. Retrieved 1 March 2016. 
  3. ^ a b c 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:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 5 December 2016. 
  4. ^ a b c 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 1 March 2016. 
  5. ^ a b "3325 TARDIS (1984 JZ)". Minor Planet Center. Retrieved 1 March 2016. 
  6. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 May 2016. 

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