_Martes.png) Shape model ofMartes from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | A. Mrkos |
| Discovery site | Kleť Obs. |
| Discovery date | 22 August 1987 |
| Designations | |
| (5026) Martes | |
| Pronunciation | /ˈmɑːrtɪs/ |
Named after | pine marten beech marten (Mustelidae mammals)[2] |
| 1987 QL1 · 1965 QE 1976 QL · 1980 VA2 | |
| main-belt · (inner)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.37 yr (23,145 days) |
| Aphelion | 2.9540AU |
| Perihelion | 1.8020 AU |
| 2.3780 AU | |
| Eccentricity | 0.2422 |
| 3.67yr (1,339 days) | |
| 75.131° | |
| 0° 16m 7.68s / day | |
| Inclination | 4.2831° |
| 304.77° | |
| 17.652° | |
| Physical characteristics | |
| 4.93 km(calculated)[3] 8.967±2.335 km[4] | |
| 4.423±0.0011 h[5] 4.424087±0.000002 h[6] 4.4243±0.005h[7] | |
| 0.066±0.072[4] 0.20(assumed)[3] | |
| B–V =0.863±0.042[8] V–R =0.440±0.047[8] C[9] · S[3] | |
| 13.80[4] · 13.9[1][3] · 14.065±0.010(R)[5] · 14.17±0.36[9] | |
5026 Martes (prov. designation:1987 QL1) is a carbonaceousasteroid from theinner region of theasteroid belt, approximately 9 kilometers (6 miles) in diameter. It was discovered on 22 August 1987, by Czech astronomerAntonín Mrkos atKleť Observatory in the Czech Republic.[10] It is named after the two weasel-like animal species:pine marten andbeech marten.[2]
Martes is the namesake member of a small asteroid family, named theMartes family.[citation needed] It orbits the Sun in theinner main-belt at a distance of 1.8–3.0 AU once every 3 years and 8 months (1,339 days). Its orbit has aneccentricity of 0.24 and aninclination of 4° with respect to theecliptic.[1]
A firstprecovery was taken atPalomar Observatory in 1953, extending the body'sobservation arc by 34 years prior to its official discovery observation at Klet.[10]
Thisminor planet was named for the two species of the family Mustelidae, thepine marten andbeech marten. They also live in the forests near the discoveringKleť Observatory.[2] The official naming citation was published by theMinor Planet Center on 22 June 1999 (M.P.C. 34920).[11]
Martes has been characterized as a carbonaceousC-type asteroid byPanSTARRS' photometric survey.[9]
Martes forms an asteroid pair with2005 WW113, and was part of the 35 sample asteroid pairs inPetr Pravec's studyFormation of asteroid pairs by rotational fission, published in the journalNature.[7]
Between 2008 and 2010, several rotationallightcurves ofMartes were obtained from photometric observations. Lightcurve analysis gave a well-definedrotation period of 4.4243 hours with a brightness amplitude of 0.69magnitude (U=3-/3/2+/3/2).[3][7][6][5]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Martes measures 8.967 kilometers in diameter and its surface has analbedo of 0.066, which is typical for carbonaceous asteroids.[4] TheCollaborative Asteroid Lightcurve Link, however, assumes a standard albedo for stony asteroids of 0.20 and consequently calculates a much smaller diameter of 4.93 kilometers, due to the higher albedo.[3]
