7835 Myroncope (prov. designation: 1993 MC) is an asteroid of the Mitidika family from the central region of the asteroid belt. It was discovered on 16 June 1993, by American astronomer Timothy Spahr at the Catalina Station in Arizona, United States. The assumed S-type asteroid has a rotation period of 7.4 hours and measures approximately 10 kilometers (6 miles) in diameter. It was named in memory of American sports announcer Myron Cope (1929–2008).[2][1]
_Myroncope.png) Shape model of Myroncope from its lightcurve | |
| Discovery [1] | |
|---|---|
| Discovered by | T. B. Spahr |
| Discovery site | Catalina Stn. |
| Discovery date | 16 June 1993 |
| Designations | |
| (7835) Myroncope | |
Named after | Myron Cope (American sports announcer)[2][3] |
| 1993 MC · 1990 WV12 | |
| main-belt [1][4] · (middle) Mitidika [5] | |
| Orbital characteristics [4] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 26.35 yr (9,623 days) |
| Aphelion | 3.1508 AU |
| Perihelion | 1.9528 AU |
| 2.5518 AU | |
| Eccentricity | 0.2347 |
| 4.08 yr (1,489 days) | |
| 351.55° | |
| 0° 14m 30.48s / day | |
| Inclination | 12.964° |
| 220.40° | |
| 37.179° | |
| Physical characteristics | |
| 6.21 km (calculated)[6] 10.752±0.061 km[7][8] | |
| 7.43019±0.00001 h[9] | |
Pole ecliptic latitude | |
| 0.085±0.018[7][8] 0.20 (assumed)[6] | |
| S (assumed)[6] | |
| 13.3[7] · 13.4[4][6] | |
Classification and orbit
editMyroncope has been identified as a member of the Mitidika family, a dispersed asteroid family of typically carbonaceous C-type asteroids. The family is named after 2262 Mitidika (diameter of 9 km) and consists of 653 known members, the largest ones being 404 Arsinoë (95 km) and 5079 Brubeck (17 km).[5][10]: 23
The asteroid orbits the Sun in the central main-belt at a distance of 2.0–3.2 AU once every 4 years and 1 month (1,489 days). Its orbit has an eccentricity of 0.23 and an inclination of 13° with respect to the ecliptic.[4] The first identification of this asteroid was made at the Japanese Geisei Observatory in 1990. However the observation was excluded from the asteroid's orbit determination and did not extend its observation arc prior to its discovery.[1]
Naming
editThis minor planet was named in memory of famed sports announcer and journalist Myron Cope (1929–2008). He was a color commentator for the Pittsburgh Steelers National Football League team for 35 years and was the creator of the Terrible Towel in 1975.[2][3] The naming citation was published by the Minor Planet Center on 20 May 2008 (M.P.C. 62928).[11]
Physical characteristics
editDiameter and albedo
editAccording to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Myroncope measures 10.8 kilometers in diameter and its surface has an albedo of 0.08.[7][8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a smaller diameter of 6.2 kilometers based on an absolute magnitude of 13.4.[6]
Rotation period and poles
editIn 2016, the asteroid's lightcurve has been modeled using data from Lowell photometric database, which gave a sidereal rotation period of 7.43019 hours, as well as two spin axes of (72.0°, −64.0°) and (288.0°, −55.0°) in ecliptic coordinates (λ, β) (Q=n.a.).[9]
References
edit- ^ a b c d "7835 Myroncope (1993 MC)". Minor Planet Center. Retrieved 30 June 2016.
- ^ a b c Pete Zapadka (13 June 2008). "Double yoi! Out-of-this-world honor for Myron Cope". Pittsburgh Post-Gazette. Retrieved 30 June 2016.
- ^ a b Dan Gigler (12 June 2008). "And it will land on Cleveland ..." Pittsburgh Post-Gazette. Retrieved 30 June 2016.
- ^ a b c d "JPL Small-Body Database Browser: 7835 Myroncope (1993 MC)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 4 July 2017.
- ^ a b "Asteroid 7835 Myroncope – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
- ^ a b c d e "LCDB Data for (7835) Myroncope". Asteroid Lightcurve Database (LCDB). Retrieved 30 June 2016.
- ^ a b c d 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.
- ^ 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:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68.
- ^ a b c d Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573.
- ^ 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.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 June 2016.
External links
edit- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 7835 Myroncope at AstDyS-2, Asteroids—Dynamic Site
- 7835 Myroncope at the JPL Small-Body Database
