+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243327 (2008 SQ195) Classification: Main-belt Asteroid          SPK-ID: 2243327 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2065289571179129 8.0669e-08   a 2.565872399874281 3.2377e-08 au q 2.035945449030609 2.2576e-07 au i 5.662770317413717 1.0895e-05 deg node 39.33513677795913 9.6319e-05 deg peri 38.94834715409503 0.00011959 deg M 266.4043576182847 7.2716e-05 deg tp 2459390.805021090361 (2021-Jun-25.30502109) 0.00030969 TDB period 1501.24304953731 4.11 2.8415e-05 7.78e-08 d yr n .2398012767559214 4.5389e-09 deg/d Q 3.095799350717953 3.9064e-08 au   Orbit Determination Parameters    # obs. used (total)      181      data-arc span      6793 days (18.60 yr)      first obs. used      2002-04-06      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62522      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:39:36   Additional Information  Earth MOID = 1.05482 au   Jupiter MOID = 2.19036 au   T_jup = 3.395  [ hide covariance matrix ] Orbital Elements at Epoch 2457737.5 (2016-Dec-15.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2068712061368289 8.4985e-08   q 2.035146852367763 2.3974e-07 au tp 2457884.434041763582 (2017-May-10.93404176) 0.0002826 TDB node 39.50461794562305 9.5845e-05 deg peri 37.90772554163742 0.00011916 deg i 5.679507435458803 1.0925e-05 deg   Orbit Determination Parameters    # obs. used (total)      181      data-arc span      6793 days (18.60 yr)      first obs. used      2002-04-06      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62522      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:39:36   Additional Information  Jupiter MOID = 2.19036 au   T_jup = 3.395  Orbit Covariance (6×6)   e q tp node peri i e 7.22238028377606E-15 -2.031056063433345E-14 -1.873691419016928E-11 1.01608219888923E-13 -4.500552500171279E-12 -4.928183206372415E-14 q -2.031056063433345E-14 5.747604096323297E-14 5.514251838949878E-11 -3.04733245526194E-13 1.330761186012072E-11 1.462839801305674E-13 tp -1.873691419016928E-11 5.514251838949878E-11 7.986028700736175E-8 -4.626599714624647E-10 2.012356370105184E-8 2.164111699937207E-10 node 1.01608219888923E-13 -3.04733245526194E-13 -4.626599714624647E-10 9.186223557709247E-9 -9.253174938001211E-9 -8.068562552003125E-10 peri -4.500552500171279E-12 1.330761186012072E-11 2.012356370105184E-8 -9.253174938001211E-9 1.419992077773451E-8 8.561598137168883E-10 i -4.928183206372415E-14 1.462839801305674E-13 2.164111699937207E-10 -8.068562552003125E-10 8.561598137168883E-10 1.193503618240074E-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.1   n/a MPO440238   diameter diameter 2.355 km 0.530 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.035   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243327 (2008 SQ195)          Discovered 2008-Sep-25 by Spacewatch at Kitt Peak Reference: 20100626/Numbers.arc Last Updated: 2010-06-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-23 21:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin