+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2579 Spartacus (1977 PA2) Classification: Main-belt Asteroid          SPK-ID: 2002579 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07497464107715991 3.2177e-08   a 2.210083924191611 5.9733e-09 au q 2.044383675224944 7.0346e-08 au i 5.776631897224645 3.0396e-06 deg node 280.9397203323227 3.7372e-05 deg peri 333.6895055543262 4.4412e-05 deg M 78.59142695248735 2.4802e-05 deg tp 2458738.510281255082 (2019-Sep-12.01028126) 8.2602e-05 TDB period 1200.08380564447 3.29 4.8653e-06 1.332e-08 d yr n .2999790500519856 1.2161e-09 deg/d Q 2.375784173158278 6.4211e-09 au   Orbit Determination Parameters    # obs. used (total)      2431      data-arc span      16839 days (46.10 yr)      first obs. used      1974-09-22      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41801      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:08:00   Additional Information  Earth MOID = 1.03102 au   Jupiter MOID = 2.66138 au   T_jup = 3.648  [ 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 13.5   n/a MPO492781   diameter diameter 4.604 km 0.369 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.63599 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Warner, B.D. (2012) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm] [Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.] geometric albedo albedo 0.526   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 2579 Spartacus (1977 PA2)          Discovered 1977-Aug-14 by Chernykh, N. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1977 PA2 = 1934 NG1 = 1974 SE4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-24 21:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin