+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15837 Mariovalori (1995 DG13) Classification: Main-belt Asteroid          SPK-ID: 2015837 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1117812605766305 3.9804e-08   a 3.084211188829999 1.5458e-08 au q 2.739454174258034 1.2141e-07 au i 1.412938297022016 4.2093e-06 deg node 157.3158158360299 0.00015869 deg peri 52.48676485610338 0.00015948 deg M 202.1143144523728 1.7091e-05 deg tp 2459868.170527424863 (2022-Oct-15.67052743) 9.6508e-05 TDB period 1978.402214168586 5.42 1.4873e-05 4.072e-08 d yr n .18196502077374 1.368e-09 deg/d Q 3.428968203401964 1.7186e-08 au   Orbit Determination Parameters    # obs. used (total)      1402      data-arc span      9396 days (25.72 yr)      first obs. used      1995-02-24      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56805      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:01:06   Additional Information  Earth MOID = 1.73446 au   Jupiter MOID = 1.53235 au   T_jup = 3.217  [ 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 MPO502290   diameter diameter 7.337 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.075   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15837 Mariovalori           Discovered 1995 Feb. 25 by M. Tombelli at Cima Ekar. Mario Valori (1930-2000) was an amateur astronomer in the Montelupo Group. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010309/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1995 DG13 = 1997 TM16 = 1998 XE26 = 2000 AT89  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 15:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin