+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1149 Volga (1929 PF) Classification: Main-belt Asteroid          SPK-ID: 2001149 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09581883513095535 3.4651e-08   a 2.898857452183779 1.0507e-08 au q 2.62109230790484 1.0015e-07 au i 11.74898758403711 3.6331e-06 deg node 261.4288372541913 2.0107e-05 deg peri 116.3581931273891 2.8575e-05 deg M 138.3313149681598 2.0643e-05 deg tp 2458507.781603403355 (2019-Jan-24.28160340) 0.00010281 TDB period 1802.76333549054 4.94 9.8008e-06 2.683e-08 d yr n .1996934333602044 1.0856e-09 deg/d Q 3.176622596462718 1.1513e-08 au   Orbit Determination Parameters    # obs. used (total)      2924      data-arc span      33410 days (91.47 yr)      first obs. used      1929-08-01      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38447      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:53:00   Additional Information  Earth MOID = 1.64877 au   Jupiter MOID = 2.28683 au   T_jup = 3.250  [ 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 10.5   n/a MPO502164 IRAS observations used: 22 diameter diameter 52.377 km 0.365 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 27.262 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Binzel, R.P. (1987) Icarus 72, 135-208.] [Polakis, T. (2019) Minor Planet Bull. 46, 78-80.] [Polakis, T. (2020) Minor Planet Bull. 47, 177-186.] geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.690   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.12 deg. U-B UB 0.250   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.12 deg. 1149 Volga (1929 PF)          Discovered 1929-Aug-01 by Skvortsov, E. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 17:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin