+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7827 (1992 QE2) Classification: Main-belt Asteroid          SPK-ID: 2007827 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .239331893645523 2.02e-08   a 3.035138268517822 1.5376e-08 au q 2.308732879237458 6.0417e-08 au i 13.81280790105916 1.0988e-06 deg node 179.5359751538173 5.4704e-06 deg peri 170.9164944272083 6.6808e-06 deg M 161.1525860681181 7.4549e-06 deg tp 2458531.928478350081 (2019-Feb-17.42847835) 3.602e-05 TDB period 1931.372963896524 5.29 1.4676e-05 4.018e-08 d yr n .1863958990467092 1.4164e-09 deg/d Q 3.761543657798186 1.9056e-08 au   Orbit Determination Parameters    # obs. used (total)      1899      data-arc span      18136 days (49.65 yr)      first obs. used      1971-09-16      last obs. used      2021-05-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44106      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 15:35:57   Additional Information  Earth MOID = 1.30365 au   Jupiter MOID = 1.70185 au   T_jup = 3.155  [ 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 13.04   n/a E2021B10   diameter diameter 8.734 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.160   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   7827 (1992 QE2)          Discovered 1992-Aug-22 by Holt, H. E. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1992 QE2 = 1971 SA1 = 1987 SD22 = 1989 CV3 = 1990 EU3 = 1990 GM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-23 22:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin