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(145452) 2005 RN43, also written as (145452) 2005 RN43, is a classical Kuiper belt object. It has an estimated diameter of 679+55
−73 km.[6] It was discovered by Andrew Becker, Andrew Puckett and Jeremy Kubica on 10 September 2005 at Apache Point Observatory in Sunspot, New Mexico. Brown estimates that it is possibly a dwarf planet.[9][10]

(145452) 2005 RN43
Hubble Space Telescope image of 2005 RN43, taken on April 2010
Discovery[1]
Discovered byA. C. Becker
A. W. Puckett
J. M. Kubica
Discovery siteAPO
Discovery date10 September 2005
Designations
MPC designation
(145452) 2005 RN43
Minor planet category
TNO
Cubewano[2][3]
Extended (DES)[4]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc22376 days (61.26 yr)
Earliest precovery date2 June 1954
Aphelion42.146 AU (6.3050 Tm)
Perihelion40.571 AU (6.0693 Tm)
Semi-major axis
41.359 AU (6.1872 Tm)
Eccentricity0.019047
Orbital period (sidereal)
265.99 yr (97151.5 d)
Average orbital speed
0.0037°/d
Mean anomaly
338.28°
Mean motion
0° 0m 13.34s / day
Inclination19.313°
Longitude of ascending node
186.93°
Time of perihelion
≈ 15 June 2029[5]
±9 days
Argument of perihelion
174.88°
Earth MOID39.5672 AU (5.91917 Tm)
Jupiter MOID35.6155 AU (5.32800 Tm)
TJupiter5.446
Physical characteristics
Dimensions679+55
−73 km[6]
Synodic rotation period
6.95 h (0.290 d)
Sidereal rotation period
5.62 h[2]
Geometric albedo
0.107+0.029
−0.018[6]
Spectral type
IR–RR (red)[6]
B–V=0.95±0.02[7]
V–R=0.59±0.01[7]
V–I=1.08±0.02[7]
Apparent magnitude
20.1[8]
Absolute magnitude (H)
3.89±0.05[6]
3.9[2]

    Classification


    The Minor Planet Center (MPC) classifies it as a cubewano.[3] But since this object has an inclination of 19.3°, the Deep Ecliptic Survey (DES) classifies it as scattered-extended.[4]

    It has been observed 119 times over thirteen oppositions, with precovery images back to 1954.[2]


    See also



    References


    1. "List Of Transneptunian Objects". Minor Planet Center. Retrieved 22 August 2016.
    2. "JPL Small-Body Database Browser: 145452 (2005 RN43)" (2015-08-13 last obs). Retrieved 11 April 2016.
    3. "MPEC 2009-R09 :Distant Minor Planets (2009 September 16.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2010-01-08.
    4. Marc W. Buie. "Orbit Fit and Astrometric record for 145452" (2008-08-09 using 220 of 221 observations). SwRI (Space Science Department). Retrieved 2009-10-04.
    5. JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
    6. Vilenius, E.; Kiss, C.; Mommert, M.; et al. (2012). ""TNOs are Cool": A survey of the trans-Neptunian region VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects". Astronomy & Astrophysics. 541: A94. arXiv:1204.0697. Bibcode:2012A&A...541A..94V. doi:10.1051/0004-6361/201118743. S2CID 54222700.
    7. Belskaya, Irina N.; Barucci, Maria A.; Fulchignoni, Marcello; Lazzarin, M. (April 2015). "Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo". Icarus. 250: 482–491. Bibcode:2015Icar..250..482B. doi:10.1016/j.icarus.2014.12.004.
    8. "AstDys (145452) 2005RN43 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-12-07.
    9. 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 2011-10-18. Retrieved 2011-08-25.
    10. Tancredi, Gonzalo (2009), "Physical and dynamical characteristics of icy "dwarf planets" (plutoids)", Proceedings of the International Astronomical Union, 5: 173–185, Bibcode:2010IAUS..263..173T, doi:10.1017/S1743921310001717



    На других языках

    [de] (145452) 2005 RN43

    (145452) 2005 RN43 ist ein großes transneptunisches Objekt im Kuipergürtel, das als Cubewano (CKBO) oder als erweitertes Scattered Disk Object (DO) eingestuft wird. Aufgrund seiner Größe ist der Asteroid ein Zwergplanetenkandidat.
    - [en] (145452) 2005 RN43

    [ru] (145452) 2005 RN43

    2005 RN43 — крупный классический объект пояса Койпера[3].


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