+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277315 (2005 SS209) Classification: Main-belt Asteroid          SPK-ID: 2277315 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1388789466801467 7.5014e-08   a 2.325617096963679 1.2532e-08 au q 2.002637844156022 1.7853e-07 au i 6.068998759094209 8.8618e-06 deg node 321.3665477186119 4.2895e-05 deg peri 52.16901519811692 5.0552e-05 deg M 42.25390602964023 2.5705e-05 deg tp 2458848.455713291634 (2019-Dec-30.95571329) 9.2173e-05 TDB period 1295.405522429468 3.55 1.0471e-05 2.867e-08 d yr n .2779052534258448 2.2463e-09 deg/d Q 2.648596349771335 1.4272e-08 au   Orbit Determination Parameters    # obs. used (total)      219      data-arc span      7581 days (20.76 yr)      first obs. used      2000-02-12      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55457      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:26:54   Additional Information  Earth MOID = 1.00901 au   Jupiter MOID = 2.83834 au   T_jup = 3.554  [ hide covariance matrix ] Orbital Elements at Epoch 2457342.5 (2015-Nov-16.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1400561614854655 7.5368e-08   q 1.99971479169178 1.7967e-07 au tp 2457551.977960471007 (2016-Jun-12.47796047) 8.8333e-05 TDB node 321.4850705471795 4.2884e-05 deg peri 51.81251520509473 5.0313e-05 deg i 6.069737107143353 8.8653e-06 deg   Orbit Determination Parameters    # obs. used (total)      219      data-arc span      7581 days (20.76 yr)      first obs. used      2000-02-12      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55457      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:26:54   Additional Information  Jupiter MOID = 2.83834 au   T_jup = 3.554  Orbit Covariance (6×6)   e q tp node peri i e 5.680376755690529E-15 -1.351996009019545E-14 -4.304831810903952E-12 4.813539722600203E-14 -1.185979809644044E-12 -1.136421370207025E-14 q -1.351996009019545E-14 3.228106762376734E-14 1.017384767747769E-11 -1.165221166672246E-13 2.795568107200974E-12 2.72562394399369E-14 tp -4.304831810903952E-12 1.017384767747769E-11 7.802798839353717E-9 -4.959918854242168E-11 2.332328917250589E-9 1.275588379774869E-11 node 4.813539722600203E-14 -1.165221166672246E-13 -4.959918854242168E-11 1.83900083077514E-9 -1.841282278720531E-9 1.435278245562108E-10 peri -1.185979809644044E-12 2.795568107200974E-12 2.332328917250589E-9 -1.841282278720531E-9 2.531418651053995E-9 -1.393694364914073E-10 i -1.136421370207025E-14 2.72562394399369E-14 1.275588379774869E-11 1.435278245562108E-10 -1.393694364914073E-10 7.859372425615482E-11 [ 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 17.0   n/a MPO245604   277315 (2005 SS209)          Discovered 2005-Sep-30 by NEAT at Palomar Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ show close-approach data ] Alternate Designations  2005 SS209 = 2003 AJ47  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 14:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin