+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13154 Petermrva (1995 RC) Classification: Main-belt Asteroid          SPK-ID: 2013154 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1675970310081349 4.3652e-08   a 2.209000773005663 6.0745e-09 au q 1.838778801955239 9.6664e-08 au i 5.521474797493387 4.021e-06 deg node 331.5776305908163 4.3474e-05 deg peri 59.09728890902041 4.4519e-05 deg M 170.2438359945712 1.0441e-05 deg tp 2458433.398071351081 (2018-Nov-10.89807135) 3.4013e-05 TDB period 1199.201681053057 3.28 4.9465e-06 1.354e-08 d yr n .3001997125986952 1.2383e-09 deg/d Q 2.579222744056087 7.0925e-09 au   Orbit Determination Parameters    # obs. used (total)      1892      data-arc span      17428 days (47.72 yr)      first obs. used      1972-10-06      last obs. used      2020-06-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44348      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:48:16   Additional Information  Earth MOID = .850823 au   Jupiter MOID = 2.88314 au   T_jup = 3.634  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.2   n/a MPO374992   diameter diameter 4.170 km 0.239 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 2.9850 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Galad, A. (2007) Earth, Moon, and Planets 100, 77-82.] [Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm] [Pravec, P.; Wolf, M.; Sarounova, L. (2018) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.152   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   13154 Petermrva           Discovered 1995 Sept. 7 by A. Galád and A. Pravda at the Astronomical and Geophysical Observatory, Modra. Peter Mrva (b. 1962) helped to build Modra observatory and was one of the first astronomers there. During years of mostly manual labor he taught, helped to explain and inspired the second discoverer in some areas, including astronomy and computer graphics. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020427/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1995 RC = 1972 TL6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-18 18:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin