+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   52790 (1998 QD48) Classification: Main-belt Asteroid          SPK-ID: 2052790 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1792878528513613 3.3248e-08   a 2.258251717982362 6.7059e-09 au q 1.853374616267407 7.4178e-08 au i 3.884289669952526 3.4614e-06 deg node 225.5848991454087 5.8639e-05 deg peri 179.1176714960969 6.0054e-05 deg M 103.9265684074009 1.2793e-05 deg tp 2458642.666466137845 (2019-Jun-08.16646614) 4.3604e-05 TDB period 1239.529738780466 3.39 5.5212e-06 1.512e-08 d yr n .290432725199633 1.2937e-09 deg/d Q 2.663128819697318 7.9082e-09 au   Orbit Determination Parameters    # obs. used (total)      979      data-arc span      11493 days (31.47 yr)      first obs. used      1988-11-03      last obs. used      2020-04-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56593      source      ORB      producer      Otto Matic      solution date      2020-May-20 10:27:39   Additional Information  Earth MOID = .862554 au   Jupiter MOID = 2.72469 au   T_jup = 3.597  [ 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 15.8   n/a MPO359098   diameter diameter 3.436 km 0.946 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.072   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   52790 (1998 QD48)          Discovered 1998-Aug-17 by LINEAR at Socorro Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2080-Dec-31 23:05 00:01 Iris 0.0475642321222553 0.0475559277846999 0.0475725380525746 1.65688758532481 1.65688751237914 2481130.461855492 1.19174221553984 600.162803838465 38.5344080306504 46.5594886367006 133900.506023516 T 23 CATAB v2.0f-lin.ifort 2020-May-20 10:27:53 2020-May-20 10:27 Alternate Designations  1998 QD48 = 1988 VC5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 04:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin