fbpx
Wikipedia

(145451) 2005 RM43

January 01, 1970

(145451) 2005 RM43 (provisional designation 2005 RM43) is a trans-Neptunian object that resides in the scattered disc region beyond the Kuiper belt. It was discovered on 9 September 2005, by American astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot, New Mexico. It measures between approximately 500 and 650 kilometers in diameter.[2][8]

(145451) 2005 RM43
Hubble Space Telescope image of 2005 RN43 taken in 2008
Discovery[1]
Discovered byA. C. Becker
A. W. Puckett
J. M. Kubica
Discovery siteApache Point Obs.
Discovery date9 September 2005
Designations
(145451) 2005 RM43
SDO[2]
Orbital characteristics[1]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2
Observation arc14983 days (41.02 yr)
Earliest precovery date17 November 1976
Aphelion144.140 AU (21.5630 Tm)
Perihelion35.079 AU (5.2477 Tm)
89.610 AU (13.4055 Tm)
Eccentricity0.60854
848.28 yr (309834 d)
6.19°
0° 0m 4.183s / day
Inclination28.819°
84.61°
318.10°
Physical characteristics
Mean diameter
≈644 km (derived from occultation; 455 and 460 km measured)[3]
524+96
−103 km[4]
458 km (lower limit)[5]
Mean density
>0.56 g/cm3[2]
6.71 h (0.280 d)
0.102[4]
V–R=0.33±0.02 (neutral)[4]
B0−V0=0.590[6]
B-R=0.99[2]
20.4[7]
4.52±0.01[4]
4.4[1] · 4.8[8]

Description edit

 
Precovery image of 2005 RM43 taken by the Siding Spring Observatory in 1976[9]

2005 RM43 is considered likely to be a dwarf planet by both Brown and Tancredi.[8][10] Based on an absolute magnitude of 4.4, the body's diameter could be anywhere in the range of 350 to 800 kilometres (km), depending on its albedo, the surface reflectivity of the object.[11] Johnston's Archive gives an estimate of 584 km, based on an assumed albedo of 0.09.[2] Brown estimates a diameter of 524 km, based on an absolute magnitude of 4.8 and an assumed albedo of 0.08. A stellar occultation by 2005 RM43 in December 2018 gave a minimum diameter of 458 km.[5]

In 2018, two stellar occultations by 2005 RM43 were observed on 3 February and 24 December.[3] Observations of the February occultation yielded a single chord length of 456 km (283 mi).[12] Observations of the December occultation yielded two positive chords, which suggest an approximate diameter of 644 km (400 mi) for 2005 RM43.[13]

2005 RM43 has been observed 303 times over 17 oppositions, with precovery images dating back to 1976.[1][14] The orbit is well determined with an uncertainty parameter of 2.[1]

See also edit

References edit

  1. ^ a b c d e "JPL Small-Body Database Browser: 145451 (2005 RM43)" (2017-11-25 last obs). Retrieved 2 February 2019.
  2. ^ a b c d e Wm. Robert Johnston. . Johnston's Archive. Archived from the original on 2 February 2019. Retrieved 2 February 2019.
  3. ^ a b "TNO Results". ERC Lucky Star Project. Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA). Retrieved 13 July 2020.
  4. ^ a b c d Farkas-Takács, A.; Kiss, Cs.; Vilenius, E.; Marton, G.; Müller, T. G.; Mommert, M.; et al. (28 February 2020). "TNOs are Cool! A Survey of the transneptunian Region XV. Physical characteristics of 23 resonant transneptunian and scattered disk objects". Astronomy & Astrophysics. A23: 638. arXiv:2002.12712. Bibcode:2020A&A...638A..23F. doi:10.1051/0004-6361/201936183. S2CID 216193564.
  5. ^ a b Frappa, E. "2018 European Asteroidal Occultation Results". euraster.net. Retrieved 2 February 2019.
  6. ^ David L. Rabinowitz; Bradley E. Schaefer; Martha W. Schaefer; Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". The Astronomical Journal. 136 (4): 1502–1509. arXiv:0804.2864. Bibcode:2008AJ....136.1502R. doi:10.1088/0004-6256/136/4/1502. S2CID 117167835.
  7. ^ AstDyS. "(145451) 2005RM43 – Observation prediction". Department of Mathematics, University of Pisa. Retrieved 2 February 2019.
  8. ^ a b c Michael E. Brown. . California Institute of Technology. Archived from the original on 2 February 2019. Retrieved 2 February 2019.
  9. ^ Lowe, Andrew. "(145451) 2005 RM43 Precovery Images". andrew-lowe.ca.
  10. ^ Tancredi, G. (2010). "Physical and dynamical characteristics of icy "dwarf planets" (plutoids)". Icy Bodies of the Solar System: Proceedings IAU Symposium No. 263, 2009. 263: 173. Bibcode:2010IAUS..263..173T. doi:10.1017/S1743921310001717.
  11. ^ Bruton, D. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Stephen F. Austin State University.
  12. ^ "Occultation by 2005 RM43 in 03 02 2018" (PDF). ERC Lucky Star Project. Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA). 3 February 2018. Retrieved 13 July 2020.
  13. ^ "Occultation by 2005 RM43 in 23 DEC 2018" (PDF). ERC Lucky Star Project. Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA). 24 December 2018. Retrieved 13 July 2020.
  14. ^ "(145451) = 2005 RM43". Minor Planet Center. Retrieved 2 February 2019.

External links edit

  • (145451) 2005 RM43 Precovery Images
  • (145451) 2005 RM43 at the JPL Small-Body Database
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

January 01, 1970
145451, 2005, 145451, 2005, rm43, provisional, designation, 2005, rm43, trans, neptunian, object, that, resides, scattered, disc, region, beyond, kuiper, belt, discovered, september, 2005, american, astronomers, andrew, becker, andrew, puckett, jeremy, kubica,. 145451 2005 RM43 provisional designation 2005 RM43 is a trans Neptunian object that resides in the scattered disc region beyond the Kuiper belt It was discovered on 9 September 2005 by American astronomers Andrew Becker Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot New Mexico It measures between approximately 500 and 650 kilometers in diameter 2 8 145451 2005 RM43Hubble Space Telescope image of 2005 RN43 taken in 2008Discovery 1 Discovered byA C BeckerA W PuckettJ M KubicaDiscovery siteApache Point Obs Discovery date9 September 2005DesignationsMPC designation 145451 2005 RM43Minor planet categorySDO 2 Orbital characteristics 1 Epoch 27 April 2019 JD 2458600 5 Uncertainty parameter 2Observation arc14983 days 41 02 yr Earliest precovery date17 November 1976Aphelion144 140 AU 21 5630 Tm Perihelion35 079 AU 5 2477 Tm Semi major axis89 610 AU 13 4055 Tm Eccentricity0 60854Orbital period sidereal 848 28 yr 309834 d Mean anomaly6 19 Mean motion0 0m 4 183s dayInclination28 819 Longitude of ascending node84 61 Argument of perihelion318 10 Physical characteristicsMean diameter 644 km derived from occultation 455 and 460 km measured 3 524 96 103 km 4 458 km lower limit 5 Mean density gt 0 56 g cm3 2 Synodic rotation period6 71 h 0 280 d Geometric albedo0 102 4 Spectral typeV R 0 33 0 02 neutral 4 B0 V0 0 590 6 B R 0 99 2 Apparent magnitude20 4 7 Absolute magnitude H 4 52 0 01 4 4 4 1 4 8 8 Contents 1 Description 2 See also 3 References 4 External linksDescription edit nbsp Precovery image of 2005 RM43 taken by the Siding Spring Observatory in 1976 9 2005 RM43 is considered likely to be a dwarf planet by both Brown and Tancredi 8 10 Based on an absolute magnitude of 4 4 the body s diameter could be anywhere in the range of 350 to 800 kilometres km depending on its albedo the surface reflectivity of the object 11 Johnston s Archive gives an estimate of 584 km based on an assumed albedo of 0 09 2 Brown estimates a diameter of 524 km based on an absolute magnitude of 4 8 and an assumed albedo of 0 08 A stellar occultation by 2005 RM43 in December 2018 gave a minimum diameter of 458 km 5 In 2018 two stellar occultations by 2005 RM43 were observed on 3 February and 24 December 3 Observations of the February occultation yielded a single chord length of 456 km 283 mi 12 Observations of the December occultation yielded two positive chords which suggest an approximate diameter of 644 km 400 mi for 2005 RM43 13 2005 RM43 has been observed 303 times over 17 oppositions with precovery images dating back to 1976 1 14 The orbit is well determined with an uncertainty parameter of 2 1 See also edit 144897 2004 UX10 145452 2005 RN43 145453 2005 RR43 248835 2006 SX368References edit a b c d e JPL Small Body Database Browser 145451 2005 RM43 2017 11 25 last obs Retrieved 2 February 2019 a b c d e Wm Robert Johnston List of Known Trans Neptunian Objects Johnston s Archive Archived from the original on 2 February 2019 Retrieved 2 February 2019 a b TNO Results ERC Lucky Star Project Laboratoire d Etudes Spatiales et d Instrumentation en Astrophysique LESIA Retrieved 13 July 2020 a b c d Farkas Takacs A Kiss Cs Vilenius E Marton G Muller T G Mommert M et al 28 February 2020 TNOs are Cool A Survey of the transneptunian Region XV Physical characteristics of 23 resonant transneptunian and scattered disk objects Astronomy amp Astrophysics A23 638 arXiv 2002 12712 Bibcode 2020A amp A 638A 23F doi 10 1051 0004 6361 201936183 S2CID 216193564 a b Frappa E 2018 European Asteroidal Occultation Results euraster net Retrieved 2 February 2019 David L Rabinowitz Bradley E Schaefer Martha W Schaefer Suzanne W Tourtellotte 2008 The Youthful Appearance of the 2003 EL61 Collisional Family The Astronomical Journal 136 4 1502 1509 arXiv 0804 2864 Bibcode 2008AJ 136 1502R doi 10 1088 0004 6256 136 4 1502 S2CID 117167835 AstDyS 145451 2005RM43 Observation prediction Department of Mathematics University of Pisa Retrieved 2 February 2019 a b c Michael E Brown How many dwarf planets are there in the outer solar system updates daily California Institute of Technology Archived from the original on 2 February 2019 Retrieved 2 February 2019 Lowe Andrew 145451 2005 RM43 Precovery Images andrew lowe ca Tancredi G 2010 Physical and dynamical characteristics of icy dwarf planets plutoids Icy Bodies of the Solar System Proceedings IAU Symposium No 263 2009 263 173 Bibcode 2010IAUS 263 173T doi 10 1017 S1743921310001717 Bruton D Conversion of Absolute Magnitude to Diameter for Minor Planets Stephen F Austin State University Occultation by 2005 RM43 in 03 02 2018 PDF ERC Lucky Star Project Laboratoire d Etudes Spatiales et d Instrumentation en Astrophysique LESIA 3 February 2018 Retrieved 13 July 2020 Occultation by 2005 RM43 in 23 DEC 2018 PDF ERC Lucky Star Project Laboratoire d Etudes Spatiales et d Instrumentation en Astrophysique LESIA 24 December 2018 Retrieved 13 July 2020 145451 2005 RM43 Minor Planet Center Retrieved 2 February 2019 External links edit 145451 2005 RM43 Precovery Images 145451 2005 RM43 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 145451 2005 RM43 amp oldid 1196895392, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.