4832 Palinurus
Discovery [1] | |
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Discovered by | C. Shoemaker |
Discovery site | Palomar Obs. |
Discovery date | 12 October 1988 |
Designations | |
MPC designation | (4832) Palinurus |
Pronunciation |
/ˌpælɪˈnjʊərəs/ PAL-i-NEWR-əs |
Named after |
Palinurus [1] (Greek mythology) |
1988 TU1 | |
Jupiter trojan [1][2] Trojan [3] · background [4] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 29.67 yr (10,837 d) |
Aphelion | 6.0038 AU |
Perihelion | 4.5314 AU |
5.2676 AU | |
Eccentricity | 0.1398 |
12.09 yr (4,416 d) | |
184.93° | |
0° 4m 53.4s / day | |
Inclination | 19.061° |
135.12° | |
209.71° | |
Jupiter MOID | 0.4645 AU |
TJupiter | 2.8710 |
Physical characteristics | |
Mean diameter |
±0.51 km 52.06[5] 53.16 km (calculated)[6] |
±0.002 h 5.319[7] | |
0.057(assumed)[6] ±0.006 0.071[5] | |
D (Pan-STARRS)[6][8] D (SDSS-MOC)[9] B–V = ±0.060 0.830[10] V–R = ±0.040 0.510[10] V–I = ±0.038 1.000[6] | |
9.9[5] 10.0[1][2] 10.1[6] ±0.15 10.37[8] | |
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4832 Palinurus (/ˌpælɪˈnjʊərəs/ PAL-i-NEWR-əs), provisional designation 1988 TU1, is a Jupiter trojan from the Trojan camp, approximately 52 kilometers (32 miles) in diameter. It was discovered on 12 October 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California.[1] The dark D-type asteroid belongs to the 90 largest Jupiter trojans and has a short rotation period of 5.3 hours.[6] It was named after Aeneas' navigator, Palinurus, from Greek mythology.[1]
Orbit and classification
Palinurus is a Jovian asteroid in the so-called Trojan camp, located in the L5 Lagrangian point, 60° behind Jupiter, orbiting in a 1:1 resonance with the Gas Giant .[3] It is also a non-family asteroid of the Jovian background population.[4]
It orbits the Sun at a distance of 4.5–6.0 AU once every 12 years and 1 month (4,416 days; semi-major axis of 5.27 AU). Its orbit has an eccentricity of 0.14 and an inclination of 19° with respect to the ecliptic.[2] The body's observation arc begins at Palomar in September 1988, one month prior to its official discovery observation.[1]
Physical characteristics
In the SDSS-based taxonomy, Palinurus is a dark D-type asteroid.[9] Pan-STARRS' survey has also characterized it as a D-type, which is the most common spectral type among the larger Jupiter trojans. It has a high V–I color index of 1.00.[6][8][10]
Rotation period
In July 2010, a rotational lightcurve of Palinurus was obtained during eight consecutive nights by Italian astronomer Stefano Mottola at the Calar Alto Observatory in Spain. Lightcurve analysis gave a rotation period of ±0.002 hours with a brightness variation of 0.09 5.319magnitude (U=2-).[6][7]
In January 2015, photometric observations by Robert Stephens at the Center for Solar System Studies in Landers, California, determined a period of ±0.01 hours with an amplitude of 0.16 magnitude based on a fragmentary lightcurve ( 5.85U=1).[6][11][lower-alpha 1]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Palinurus measures 52.06 kilometers in diameter and its surface has an albedo of 0.071,[5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a C-type asteroid of 0.057 and calculates a similar diameter of 53.16 kilometers based on an absolute magnitude of 10.1.[6]
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Naming
This minor planet was named by the discoverer from Greek mythology after Palinurus, the great helmsman of Aeneas's ship. After the fall of Troy in the Trojan War, he led the rest of the Trojan fleet to Carthage, Sicily, and finally to Italy. The official naming citation was published by the Minor Planet Center on 25 August 1991 (M.P.C. 18647).[12]
Notes
References
- 1 2 3 4 5 6 7 "4832 Palinurus (1988 TU1)". Minor Planet Center. Retrieved 16 June 2018.
- 1 2 3 4 "JPL Small-Body Database Browser: 4832 Palinurus (1988 TU1)" (2018-05-19 last obs.). Jet Propulsion Laboratory. Retrieved 16 June 2018.
- 1 2 "List of Jupiter Trojans". Minor Planet Center. 1 June 2018. Retrieved 16 June 2018.
- 1 2 "Asteroid (4832) Palinurus – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 16 June 2018.
- 1 2 3 4 Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 16 June 2018. (online catalog)
- 1 2 3 4 5 6 7 8 9 10 "LCDB Data for (4832) Palinurus". Asteroid Lightcurve Database (LCDB). Retrieved 16 June 2018.
- 1 2 Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; et al. (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal. 141 (5): 32. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170. Retrieved 16 June 2018.
- 1 2 3 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results" (PDF). Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 16 June 2018.
- 1 2 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi:10.1051/0004-6361/200913322. Retrieved 12 June 2018.
- 1 2 3 Chatelain, Joseph P.; Henry, Todd J.; French, Linda M.; Winters, Jennifer G.; Trilling, David E. (June 2016). "Photometric colors of the brightest members of the Jupiter L5 Trojan cloud". Icarus. 271: 158–169. Bibcode:2016Icar..271..158C. doi:10.1016/j.icarus.2016.01.026. Retrieved 13 June 2016.
- ↑ Stephens, Robert D.; Coley, Daniel R.; French, Linda M. (July 2015). "Dispatches from the Trojan Camp - Jovian Trojan L5 Asteroids Observed from CS3: 2014 October - 2015 January". The Minor Planet Bulletin. 42 (3): 216–224. Bibcode:2015MPBu...42R.216S. ISSN 1052-8091. Retrieved 16 June 2018.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 16 June 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Asteroid 4832 Palinurus at the Small Bodies Data Ferret
- 4832 Palinurus at AstDyS-2, Asteroids—Dynamic Site
- 4832 Palinurus at the JPL Small-Body Database