[en] | 16070 Charops

16070 Charops (provisional designation 1999 RB101) is a Jupiter trojan from the Trojan camp, approximately 64 kilometers (40 miles) in diameter. It was discovered on 8 September 1999, by astronomers with Lincoln Near-Earth Asteroid Research at Lincoln Laboratory’s Experimental Test Site near Socorro, New Mexico, in the United States.[1] The dark D-type asteroid belongs to the 60 largest Jupiter trojans and has a rotation period of 20.24 hours.[4] It was named after the Lycian soldier Charops from Greek mythology.[2]

16070 Charops
Discovery[1]
Discovered byLINEAR
Discovery siteLincoln Lab’s ETS
Discovery date8 September 1999
Designations
(16070) Charops
Named after
Charops[2]
(Greek mythology)
1999 RB101 · 1982 BD15
1993 BY3
Jupiter trojan[1][3][4]
Trojan[5][6] · background[6]
AdjectivesCharopian
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc63.66 yr (23,250 d)
Aphelion5.7667 AU
Perihelion4.4978 AU
5.1322 AU
Eccentricity0.1236
11.63 yr (4,247 d)
240.19°
0° 5m 5.28s / day
Inclination16.252°
300.88°
353.61°
Jupiter MOID0.49 AU
TJupiter2.9060
Physical characteristics
63.19±1.01 km[7]
64.13±5.8 km[8]
64.19 km (derived)[4]
68.98±3.69 km[9]
20.205±0.015 h[10][a]
20.24±0.01 h[11][a]
20.27±0.01 h[11][a]
31.74±0.01 h[12][a]
0.045±0.005[9]
0.0516±0.011[8]
0.0565 (derived)[4]
0.058±0.009[7]
DPan-STARRS)[13]
D (SDSS-MOC)[14]
C (assumed)[4]
B–V = 0.770±0.060[15]
V–R = 0.480±0.040[15]
V–I = 0.960±0.037[4]
9.7[1][3][4][7]
9.80[9]
9.94±0.23[13]

Orbit and classification

Charops is located in the L5 Lagrangian point, 60° behind Jupiter in the so-called Trojan camp.[5] It is also a non-family asteroid of the Jovian background population.[6] It orbits the Sun at a distance of 4.5–5.8 AU once every 11 years and 8 months (4,247 days; semi-major axis of 5.13 AU). Its orbit has an eccentricity of 0.12 and an inclination of 16° with respect to the ecliptic.[3]

The body’s observation arc begins with a precovery published by the Digitized Sky Survey and taken at the Palomar Observatory in September 1954, or 45 years prior to its official discovery observation at Socorro.[1]

Numbering and naming

This minor planet was numbered on 26 July 2000 (M.P.C. 40995).[16] As of 2018, it has not been named.[1] On 14 May 2021, the object was named by the Working Group for Small Bodies Nomenclature (WGSBN), after the Lycian soldier Charops, son of Hippasus and brother to Socus, from Greek mythology. Charops was wounded by the Greek hero Odysseus in the Trojan War.[2]

Physical characteristics

In the SDSS-based taxonomy, Charops is a dark D-type asteroid.[17][14] It has also been characterized as a D-type by Pan-STARRS‘ survey, while the Collaborative Asteroid Lightcurve Link (CALL) assumes it to be a C-type asteroid.[4]

Rotation period

Several rotational lightcurves of Charops have been obtained from photometric observations by Daniel Coley and Robert Stephens at GMARS (G79) and the Center for Solar System Studies, California. Analysis of the best-rated lightcurve from October 2011 gave a rotation period of 20.24±0.01 hours with a brightness variation of 0.10±0.01 magnitude (U=2).[4][10][11][12][a] A longer period with a high amplitude reported by Duffard Melita has received a lower rating (U=2-).[b]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS, and the NEOWISE mission of NASA’s Wide-field Infrared Survey Explorer, Charops measures between 63.19 and 68.98 kilometers in diameter and its surface has an albedo between 0.045 and 0.058.[7][8][9] CALL derives an albedo of 0.0565 and a diameter of 64.19 kilometers based on an absolute magnitude of 9.7.[4]

100+ largest Jupiter trojans
Largest Jupiter Trojans by survey(A)
(mean-diameter in kilometers; YoD: Year of Discovery)
DesignationHWISEIRASAkariLnRPV–IYoDRef
624 Hektor7.2225233230.99L46.920.9301907list
617 Patroclus8.19140.362140.92140.85L5102.800.8301906list
911 Agamemnon7.89131.038166.66185.30L46.590.9801919list
588 Achilles8.67130.099135.47133.22L47.310.9401906list
3451 Mentor8.4126.288116.30117.91L57.700.7701984list
3317 Paris8.3118.790116.26120.45L57.090.9501984list
1867 Deiphobus8.3118.220122.67131.31L558.660.9301971list
1172 Äneas8.33118.020142.82148.66L58.710.9501930list
1437 Diomedes8.3117.786164.31172.60L424.490.8101937list
1143 Odysseus7.93114.624125.64130.81L410.110.8601930list
2241 Alcathous8.64113.682114.63118.87L57.690.9401979list
659 Nestor8.99112.320108.87107.06L415.980.7901908list
3793 Leonteus8.7112.04686.2687.58L45.620.7801985list
3063 Makhaon8.4111.655116.14114.34L48.640.8301983list
1583 Antilochus8.6108.842101.62111.69L431.540.9501950list
884 Priamus8.81101.09396.29119.99L56.860.9001917list
1208 Troilus8.99100.477103.34111.36L556.170.7401931list
1173 Anchises8.8999.549126.27120.49L511.600.7801930list
2207 Antenor8.8997.65885.1191.32L57.970.9501977list
2363 Cebriones9.1195.97681.8484.61L520.050.9101977list
4063 Euforbo8.795.619102.46106.38L48.850.9501989list
2357 Phereclos8.9494.62594.9098.45L514.390.9601981list
4709 Ennomos8.591.43380.8580.03L512.280.6901988list
2797 Teucer8.789.430111.14113.99L410.150.9201981list
2920 Automedon8.888.574111.01113.11L410.210.9501981list
15436 Dexius9.187.64685.7178.63L48.970.8701998list
3596 Meriones9.287.38075.0973.28L412.960.8301985list
2893 Peiroos9.2386.88487.4686.76L58.960.9501975list
4086 Podalirius9.185.49586.8985.98L410.430.8701985list
4060 Deipylos9.384.04379.2186.79L49.300.7601987list
1404 Ajax9.383.99081.6996.34L429.380.9601936list
4348 Poulydamas9.582.03270.0887.51L59.910.8401988list
5144 Achates9.080.95891.9189.85L55.960.9201991list
4833 Meges8.980.16587.3389.39L414.250.9401989list
2223 Sarpedon9.4177.48094.63108.21L522.740.8801977list
4489 Dracius9.076.59592.9395.02L412.580.9501988list
2260 Neoptolemus9.3176.43571.6581.28L48.180.9501975list
5254 Ulysses9.276.14778.3480.00L428.720.9701986list
3708 Socus9.375.66179.5976.75L56.550.9801974list
2674 Pandarus9.174.26798.10101.72L58.481.0001982list
3564 Talthybius9.473.73068.9274.11L440.590.9001985list
4834 Thoas9.172.33186.8296.21L418.190.9501989list
7641 Cteatus9.471.83968.9775.28L427.770.9801986list
3540 Protesilaos9.370.22576.8487.66L48.950.9401973list
11395 Iphinous9.868.97764.7167.78L417.381998list
4035 Thestor9.668.73368.2366.99L413.470.9701986list
5264 Telephus9.468.47273.2681.38L49.530.9701991list
1868 Thersites9.568.16370.0878.89L410.480.9601960list
9799 Thronium9.668.03364.8772.42L421.520.9101996list
4068 Menestheus9.567.62562.3768.46L414.400.9501973list
23135 Pheidas9.966.23058.2968.50L48.690.8602000list
2456 Palamedes9.365.91691.6699.60L47.240.9201966list
3709 Polypoites9.165.29799.0985.23L410.041.0001985list
1749 Telamon9.564.89881.0669.14L416.980.9701949list
3548 Eurybates9.663.88572.1468.40L48.710.7301973list
4543 Phoinix9.763.83662.7969.54L438.871.2001989list
12444 Prothoon9.863.83564.3162.41L515.821996list
4836 Medon9.563.27767.7378.70L49.820.9201989list
16070 Charops9.763.19164.1368.98L520.240.9601999list
15440 Eioneus9.662.51966.4871.88L421.430.9701998list
4715 Medesicaste9.762.09763.9165.93L58.810.8501989list
34746 Thoon9.861.68460.5163.63L519.630.9502001list
38050 Bias9.861.60361.0450.44L418.850.9901998list
5130 Ilioneus9.760.71159.4052.49L514.770.9601989list
5027 Androgeos9.659.78657.86n.a.L411.380.9101988list
6090 Aulis9.459.56874.5381.92L418.480.9801989list
5648 Axius9.759.29563.91n.a.L537.560.9001990list
7119 Hiera9.759.15076.4077.29L44000.9501989list
4805 Asteropaios10.057.64753.1643.44L512.371990list
16974 Iphthime9.857.34155.4357.15L478.90.9601998list
4867 Polites9.857.25158.2964.29L511.241.0101989list
2895 Memnon10.056.70655.67n.a.L57.500.7101981list
4708 Polydoros9.954.96455.67n.a.L57.520.9601988list
(21601) 1998 XO8910.054.90955.6756.08L412.650.9701998list
12929 Periboea9.954.07761.0455.34L59.270.8801999list
17492 Hippasos10.053.97555.67n.a.L517.751991list
5652 Amphimachus10.153.92153.1652.48L48.371.0501992list
2759 Idomeneus9.953.67661.0152.55L432.380.9101980list
5258 Rhoeo10.253.27550.77n.a.L419.851.0101989list
(12126) 1999 RM1110.153.202n.a.n.a.L5n.a.?1999list
(15502) 1999 NV2710.053.10055.6750.86L515.130.8751999list
4754 Panthoos10.053.02553.1556.96L527.681977list
4832 Palinurus10.052.05853.16n.a.L55.321.0001988list
5126 Achaemenides10.551.92244.2248.57L453.021989list
3240 Laocoon10.251.69550.77n.a.L511.310.8801978list
4902 Thessandrus9.851.26361.0471.79L47380.9601989list
11552 Boucolion10.151.13653.1653.91L532.441993list
(20729) 1999 XS14310.450.96146.30n.a.L45.721.0001999list
6545 Leitus10.150.95153.16n.a.L416.260.9101986list
4792 Lykaon10.150.87053.16n.a.L540.090.9601988list
21900 Orus10.050.81055.6753.87L413.450.9501999list
1873 Agenor10.150.79953.7654.38L520.601971list
5028 Halaesus10.250.77050.77n.a.L424.940.9001988list
2146 Stentor9.950.75558.29n.a.L416.401976list
4722 Agelaos10.050.37853.1659.47L518.440.9101977list
5284 Orsilocus10.150.15953.16n.a.L410.310.9701989list
11509 Thersilochos10.149.96053.1656.23L517.371990list
5285 Krethon10.149.60658.5352.61L412.041.0901989list
4791 Iphidamas10.149.52857.8559.96L59.701.0301988list
9023 Mnesthus10.149.15150.7760.80L530.661988list
5283 Pyrrhus9.748.35664.5869.93L47.320.9501989list
4946 Askalaphus10.248.20952.7166.10L422.730.9401988list
(22149) 2000 WD4910.248.19050.7750.37L47.841.0902000list
(32496) 2000 WX18210.248.01750.7751.63L523.340.9502000list
5120 Bitias10.247.98750.77n.a.L515.210.7801988list
12714 Alkimos10.147.81961.0454.62L428.481991list
7352 Hypsenor9.947.73155.67 47.07L56480.8501994list
1870 Glaukos10.647.64942.23n.a.L55.991971list
4138 Kalchas10.146.46253.1661.04L429.20.8101973list
(23958) 1998 VD3010.246.00150.7747.91L45620.9901998list
4828 Misenus10.445.95446.30 43.22L512.870.9201988list
4057 Demophon10.145.68353.16n.a.L429.821.0601985list
4501 Eurypylos10.445.52446.30n.a.L46.051989list
4007 Euryalos10.345.51548.4853.89L46.391973list
5259 Epeigeus10.344.74142.5944.42L418.421989list
30705 Idaios10.444.54646.30n.a.L515.741977list
16560 Daitor10.743.86151.4243.38L51991list
(15977) 1998 MA1110.443.53046.3051.53L52500.9061998list
7543 Prylis10.642.89342.23n.a.L417.801973list
4827 Dares10.542.77044.22n.a.L519.001988list
1647 Menelaus10.542.71644.22n.a.L417.740.8661957list
(A) Used sources: WISE/NEOWISE catalog (NEOWISE_DIAM_V1 PDS, Grav, 2012); IRAS data (SIMPS v.6 catalog); and Akari catalog (Usui, 2011); RP: rotation period and V–I (color index) taken from the LCDB

Note: missing data was completed with figures from the JPL SBDB (query) and from the LCDB (query form) for the WISE/NEOWISE and SIMPS catalogs, respectively. These figures are given in italics. Also, listing is incomplete above #100.

Notes

  1. ^ a b c d e Lightcurve plots of (16070) 1999 RB101 from 2011, 2014/15, 2017, 2018 by Daniel Coley and Robert Stephens at the Center for Solar System Studies (U80) and (U81). Quality code is 1+/2+/2+/n.a. (lightcurve rating at CS3). Summary figures at the LCDB and CS3.
  2. ^ Melita (2012), observation of (16070) 1999 RB101 from 23 May 2012 with a rotation period of 52.80±0.05 and an amplitude of 0.40±0.03. Quality code is 2-. Summary figures at LCDB

References

  1. ^ a b c d e f “16070 (1999 RB101)”. Minor Planet Center. Retrieved 14 June 2018.
  2. ^ a b c “WGSBN Bulletin Archive”. Working Group for Small Bodies Nomenclature. 14 May 2021. Retrieved 16 May 2021. (Bulletin #1)
  3. ^ a b c d “JPL Small-Body Database Browser: 16070 (1999 RB101)” (2018-05-24 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2018.
  4. ^ a b c d e f g h i j “LCDB Data for (16070)”. Asteroid Lightcurve Database (LCDB). Retrieved 14 June 2018.
  5. ^ a b “List of Jupiter Trojans”. Minor Planet Center. 4 October 2017. Retrieved 14 June 2018.
  6. ^ a b c “Asteroid (16070) 1999 RB101 – Proper elements”. AstDyS-2, Asteroids – Dynamic Site. Retrieved 5 June 2018.
  7. ^ a b c d 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. S2CID 119101711. (online catalog)
  8. ^ 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS…12…..T. Retrieved 15 June 2018.
  9. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). “Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey”. Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ…63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  10. ^ a b Stephens, Robert D.; Coley, Daniel R. (July 2017). “Lightcurve Analysis of Trojan Asteroids at the Center for Solar System Studies 2017 January – March”. The Minor Planet Bulletin. 44 (3): 252–257. Bibcode:2017MPBu…44..252S. ISSN 1052-8091. PMC 7243922. PMID 32455404.
  11. ^ a b c 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.
  12. ^ a b French, Linda M.; Stephens, Robert D.; Coley, Daniel R.; Megna, Ralph; Wasserman, Lawrence H. (July 2012). “Photometry of 17 Jovian Trojan Asteroids”. The Minor Planet Bulletin. 39 (3): 183–187. Bibcode:2012MPBu…39..183F. ISSN 1052-8091.
  13. ^ a b 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”. Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261…34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339.
  14. ^ a b 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 30 October 2019. (PDS data set)
  15. ^ a b 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.
  16. ^ “MPC/MPO/MPS Archive”. Minor Planet Center. Retrieved 14 June 2018.
  17. ^ “Asteroid (16070) 1999 RB101”. Small Bodies Data Ferret. Archived from the original on 14 June 2018. Retrieved 14 June 2018.

Source: en.wikipedia.org