2001 QG298 is a small plutino occupying the 3:2 mean motion resonance with Neptune. Its size is estimated at 122 km assuming a comet-like albedo of about 4%.[3]
2001 QG298 has a double peaked light curve with a large amplitude, which has changed from 1.14 in 2003 to 0.7 in 2010. This large amplitude implies that it is actually a contact binary consisting of two elongated components of approximately equal size viewed from almost the equatorial perspective. The size of the components separated by the distance of approximately 300 km will be then about 95 km each. The density of 2001 QG298 should be at least 0.6–0.7 g/cm3 for it to remain bound.[3][4]
^ ab. IAU Minor Planet Center. 14 April 2006. Archived from the original on 4 March 2016. Retrieved 24 February 2016.
^ ab"JPL Small-Body Database Browser: 139775 (2001 QG298)". Retrieved 24 February 2016. 2010-10-04 last obs.
^ abcdefgScott S. Sheppard; David C. Jewitt (2004). "Extreme Kuiper Belt Object 2001 QG298 and the Fraction of Contact Binaries". The Astronomical Journal. 4127 (5): 3023–3033. arXiv:astro-ph/0402277. Bibcode:2004AJ....127.3023S. doi:10.1086/383558. S2CID 119486610.
^ abPedro Lacerda (2011). "A Change in the Lightcurve of Kuiper Belt Contact Binary (139775) 2001 QG298". The Astronomical Journal. 142 (3): 90. arXiv:1107.3507. Bibcode:2011AJ....142...90L. doi:10.1088/0004-6256/142/3/90. S2CID 118638439.
Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
March 14, 2024
139775, 2001, 139775, 2001, qg298, trans, neptunian, object, that, resides, kuiper, belt, discovered, august, 2001, marc, william, buie, cerro, tololo, observatory, classified, plutino, which, means, that, mean, motion, resonance, with, neptune, 139775, 2001, . 139775 2001 QG298 is a trans Neptunian object TNO that resides in the Kuiper belt and was discovered on 19 August 2001 by Marc William Buie at Cerro Tololo Observatory 2 It is classified as a plutino which means that it is in the 3 2 mean motion resonance with Neptune 1 139775 2001 QG298DiscoveryDiscovered byMarc William BuieDiscovery date19 August 2001DesignationsDesignation 139775 2001 QG298Minor planet categoryPlutino MPC 1 Orbital characteristics 2 Epoch 13 January 2016 JD 2457400 5 Aphelion46 642 AUPerihelion31 758 AUSemi major axis39 200 AUEccentricity0 190Orbital period sidereal 245 43 a 89 645 031 d Mean anomaly7 386 Inclination6 500 Longitude of ascending node162 610 Argument of perihelion309 327 Physical characteristicsDimensions122 km 3 Mean density0 6 0 7 g cm3 4 Sidereal rotation period13 7744 0 0004 h 3 Albedo0 04 assumed 3 Spectral typeV R 0 60 0 02B V 1 00 0 04 3 Absolute magnitude H 6 85 3 Contents 1 Physical properties 2 See also 3 References 4 External linksPhysical properties edit2001 QG298 is a small plutino occupying the 3 2 mean motion resonance with Neptune Its size is estimated at 122 km assuming a comet like albedo of about 4 3 2001 QG298 has a double peaked light curve with a large amplitude which has changed from 1 14 in 2003 to 0 7 in 2010 This large amplitude implies that it is actually a contact binary consisting of two elongated components of approximately equal size viewed from almost the equatorial perspective The size of the components separated by the distance of approximately 300 km will be then about 95 km each The density of 2001 QG298 should be at least 0 6 0 7 g cm3 for it to remain bound 3 4 See also edit2003 SQ317 2004 TT357References edit a b MPEC G54 DISTANT MINOR PLANETS 2006 Apr 25 0 TT 27421 2007 05 R1 IAU Minor Planet Center 14 April 2006 Archived from the original on 4 March 2016 Retrieved 24 February 2016 a b JPL Small Body Database Browser 139775 2001 QG298 Retrieved 24 February 2016 2010 10 04 last obs a b c d e f g Scott S Sheppard David C Jewitt 2004 Extreme Kuiper Belt Object 2001 QG298 and the Fraction of Contact Binaries The Astronomical Journal 4127 5 3023 3033 arXiv astro ph 0402277 Bibcode 2004AJ 127 3023S doi 10 1086 383558 S2CID 119486610 a b Pedro Lacerda 2011 A Change in the Lightcurve of Kuiper Belt Contact Binary 139775 2001 QG298 The Astronomical Journal 142 3 90 arXiv 1107 3507 Bibcode 2011AJ 142 90L doi 10 1088 0004 6256 142 3 90 S2CID 118638439 External links edit 139775 2001 QG298 at the JPL Small Body DatabaseClose approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters Retrieved from https en wikipedia org w index php title 139775 2001 QG298 amp oldid 1187145033, wikipedia, wiki, book, books, library,
