+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20907 (2762 P-L) Classification: Main-belt Asteroid          SPK-ID: 2020907 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2410333217651432 4.1272e-08   a 3.145805048589434 1.8781e-08 au q 2.387561208102364 1.3201e-07 au i 2.728165348946681 4.3614e-06 deg node 81.6653889474199 9.2408e-05 deg peri 297.229959544364 9.2783e-05 deg M 259.8369482756412 1.1533e-05 deg tp 2459767.523660994848 (2022-Jul-07.02366099) 6.9074e-05 TDB period 2037.962246995945 5.58 1.8251e-05 4.997e-08 d yr n .1766470407048302 1.5819e-09 deg/d Q 3.904048889076503 2.3308e-08 au   Orbit Determination Parameters    # obs. used (total)      943      data-arc span      21877 days (59.90 yr)      first obs. used      1960-09-24      last obs. used      2020-08-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5176      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:34:18   Additional Information  Earth MOID = 1.39008 au   Jupiter MOID = 1.56055 au   T_jup = 3.162  [ 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 14.61   n/a E2021B10   diameter diameter 6.709 km 0.390 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.068   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20907 (2762 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2762 P-L = 1999 RQ49  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 00:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin