+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2009 DO111) Classification: Apollo [NEO]          SPK-ID: 3449749 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2809136515804572 1.0195e-06   a 1.050725942525987 1.4834e-07 au q .7555626812006944 9.6461e-07 au i 2.980765614944724 8.5006e-06 deg node 2.027457444127001 8.882e-05 deg peri 273.3298898127389 6.1936e-05 deg M 84.48014420415321 0.00085444 deg tp 2458908.182346890288 (2020-Feb-28.68234689) 0.00091416 TDB period 393.3984184399937 1.08 8.3311e-05 2.281e-07 d yr n .9151028146670395 1.9379e-07 deg/d Q 1.34588920385128 1.9001e-07 au   Orbit Determination Parameters    # obs. used (total)      271      # delay obs. used      0      # Doppler obs. used      1      data-arc span      983 days (2.69 yr)      first obs. used      2009-02-22      last obs. used      2011-11-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .28423      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:01:09   Additional Information  Earth MOID = .00219606 au   Jupiter MOID = 3.7576 au   T_jup = 5.814  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 22.8   n/a MPO264987   rotation period rot_per 0.04890 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Koehn, B.W.; Bowell, E.L.G.; Skiff, B.A.; Sanborn, J.J.; et al. (2014) Minor Planet Bull. 41, 286-300.] [Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.] [Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.] [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-24 11:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin