+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21896 (1999 VM6) Classification: Main-belt Asteroid          SPK-ID: 2021896 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .168876676645421 3.823e-08   a 3.180547518825773 2.1379e-08 au q 2.643427223933636 1.2938e-07 au i 5.761237157192749 4.2631e-06 deg node 118.7455281508188 3.5884e-05 deg peri 238.5303499136294 3.7883e-05 deg M 308.4489269944857 1.3861e-05 deg tp 2459497.178768891149 (2021-Oct-09.67876889) 8.154e-05 TDB period 2071.81636722458 5.67 2.089e-05 5.719e-08 d yr n .1737605734248825 1.752e-09 deg/d Q 3.717667813717909 2.4989e-08 au   Orbit Determination Parameters    # obs. used (total)      930      data-arc span      9775 days (26.76 yr)      first obs. used      1993-11-11      last obs. used      2020-08-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53452      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:54:20   Additional Information  Earth MOID = 1.64323 au   Jupiter MOID = 1.74573 au   T_jup = 3.169  [ 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 14.34   n/a E2021B10   diameter diameter 8.109 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.056   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21896 (1999 VM6)          Discovered 1999-Nov-07 by Urata, T. at Oohira Reference: 20010208/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 VM6 = 1995 AJ2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 03:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin