+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3920 Aubignan (1948 WF) Classification: Mars-crossing Asteroid          SPK-ID: 2003920 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2712642673992063 3.1349e-08   a 2.254855440173327 6.2462e-09 au q 1.643193731103595 6.9932e-08 au i 9.041487649212057 3.6322e-06 deg node 116.3524855987555 2.4911e-05 deg peri 237.6464570338142 2.6019e-05 deg M 96.31688026203548 8.5484e-06 deg tp 2458669.615525724363 (2019-Jul-05.11552572) 2.9036e-05 TDB period 1236.734520627756 3.39 5.1389e-06 1.407e-08 d yr n .2910891496885419 1.2095e-09 deg/d Q 2.86651714924306 7.9406e-09 au   Orbit Determination Parameters    # obs. used (total)      2374      data-arc span      26078 days (71.40 yr)      first obs. used      1948-11-28      last obs. used      2020-04-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43691      source      ORB      producer      Otto Matic      solution date      2020-May-20 02:00:58   Additional Information  Earth MOID = .658123 au   Jupiter MOID = 2.60334 au   T_jup = 3.559  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.0   n/a MPO347553   diameter diameter 5.956 km 1.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   rotation period rot_per 4.4762 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Li, B.; Zhao, H.; Han, X.L.; Liu, W.; et al. (2013) Minor Planet Bull. 40, 43-44.] [Simpson, G.; Chong, E.; Gerhardt, M.; Gorsky, S.; et al. (2013) Minor Planet Bull. 146-151.] geometric albedo albedo 0.339   0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   SMASSII spectral type spec_B Sa   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) 3920 Aubignan (1948 WF)          Discovered 1948-Nov-28 by Arend, S. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1948 WF = 1934 NW = 1934 PU = 1975 XC4 = 1978 NE2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-06 10:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin