+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117152 (2004 QO1) Classification: Main-belt Asteroid          SPK-ID: 2117152 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07854883208465617 4.1247e-08   a 3.162131252099105 2.9613e-08 au q 2.913749535348329 1.44e-07 au i 24.69324185750207 6.691e-06 deg node 47.74213034488098 9.9809e-06 deg peri 268.5426183314721 4.3483e-05 deg M .3830252184628508 4.3289e-05 deg tp 2459394.314790229238 (2021-Jun-28.81479023) 0.00024696 TDB period 2053.847839657423 5.62 2.8851e-05 7.899e-08 d yr n .1752807550047365 2.4622e-09 deg/d Q 3.410512968849881 3.1939e-08 au   Orbit Determination Parameters    # obs. used (total)      623      data-arc span      7576 days (20.74 yr)      first obs. used      1999-10-16      last obs. used      2020-07-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56429      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 16:51:23   Additional Information  Earth MOID = 2.02399 au   Jupiter MOID = 1.84444 au   T_jup = 3.058  [ 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 14.49   n/a E2021B55   diameter diameter 9.876 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.029   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   117152 (2004 QO1)          Discovered 2004-Aug-16 by Siding Spring Survey at Siding Spring Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2004 QO1 = 2002 EY153  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-26 04:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin