| Discovery[1] | |
|---|---|
| Discovered by | Scott Sheppard Chad Trujillo |
| Discovery site | Cerro Tololo (807) |
| Discovery date | 16 March 2013 |
| Designations | |
| (523671)2013 FZ27 | |
| 2013 FZ27 | |
| TNO[2] · distant[3] other TNO[4] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 17.07yr (6,234 d) |
| Earliestprecovery date | 20 February 2001 |
| Aphelion | 58.713AU |
| Perihelion | 37.574 AU |
| 48.143 AU | |
| Eccentricity | 0.2196 |
| 334.05 yr (122,013 d) | |
| 282.75° | |
| 0° 0m 10.8s / day | |
| Inclination | 14.059° |
| 285.22° | |
| 341.93° | |
| Physical characteristics | |
| 561 km(est.)[5] 584 km[4] 335–748 km(calculated, using H=4.5 and albedo = 0.25 ~ 0.05)[6] | |
| 0.09(est.)[4][5] | |
| 4.4[2] 4.6[5] | |
(523671) 2013 FZ27 (provisional designation2013 FZ27) is atrans-Neptunian object located in theKuiper belt in the outermost region of theSolar System, approximately 570 kilometers (350 miles) in diameter. It was discovered on 16 March 2013, by American astronomersScott Sheppard andChad Trujillo at theCTIO in Chile. Numbered in 2018, thisminor planet has not beennamed.
2013 FZ27 is atrans-Neptunian object (TNO),[7] located beyond the orbit ofNeptune (30.1 AU). TheJohnston's archive classifies it as an unspecific "other TNO", meaning that the minor planet is neither aresonant nor aclassical TNO.[4] Taking the mean of the two magnitudes, and using the standard 0.25 ~ 0.05 range for minor planets of unknown albedo, a wide 335 to 748 km spread can be estimated for the diameter.[6]
2013 FZ27 orbits the Sun at a distance of 37.6–58.7 AU once every 334 years and 1 month (122,013 days;semi-major axis of 48.14 AU). Its orbit has aneccentricity of 0.22 and aninclination of 14° with respect to theecliptic.[2]
The body'sobservation arc begins with aprecovery taken by theSloan Digital Sky Survey on 20 February 2001, over 10 years prior to its official discovery observation at Cerro Tololo.[3] The object was first announced on 2 April 2014, when American astronomersScott Sheppard andChad Trujillo at theCTIO in Chile published their observations in aMinor Planet Electronic Circular. At the time the object was at 49 AU from the Sun and had anapparent magnitude of 21.1.[1] ThePan-STARRS-1 survey at theHaleakala Observatory, Hawaii, in the United States also found precovery observations of 2013 FZ27 after 2013 FZ27 was announced and reported them to the Minor Planet Center at a later date.[3]
Thisminor planet wasnumbered by theMinor Planet Center on 25 September 2018 (M.P.C. 111778).[8] The body was given the wrong discovery credit in the initial MPC Circular and The Minor Planet Center issued an Errata on April 6, 2019 on MPC 112429 correcting the mistake and gives the discovery credit of2013 FZ27 to Scott S. Sheppard and Chad Trujillo. As of August 2019, it has not beennamed.[3]
According to Michael Brown and theJohnston's archive,2013 FZ27 measures 561 and 584 kilometers in diameter, based on anabsolute magnitude of 4.6 and 4.4[a] respectively. Both sources assume a standardalbedo of 0.09 for the body's surface.[4][5] As of 2018, no physical characteristics have been determined fromphotometric observations. The body'srotation period,pole and shape remain unknown.[2][9][10]
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| Consensus | _(cropped).jpg)  | ||||||||||||||
| Candidate (D+1σ ≥ 700 km or H ≤ 4.2) |
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