+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117720 (2005 GB8) Classification: Main-belt Asteroid          SPK-ID: 2117720 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1745251272780968 3.7928e-08   a 2.62488820940603 1.211e-08 au q 2.166779260568667 1.0415e-07 au i 3.950220997151346 4.0251e-06 deg node 196.2243031377812 5.0382e-05 deg peri 282.0335870916869 5.1707e-05 deg M 312.3547579811448 1.2806e-05 deg tp 2459406.080388091455 (2021-Jul-10.58038809) 5.5703e-05 TDB period 1553.333272683036 4.25 1.075e-05 2.943e-08 d yr n .231759665701476 1.6039e-09 deg/d Q 3.082997158243393 1.4224e-08 au   Orbit Determination Parameters    # obs. used (total)      529      data-arc span      7698 days (21.08 yr)      first obs. used      1999-12-14      last obs. used      2021-01-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53299      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:17:37   Additional Information  Earth MOID = 1.18689 au   Jupiter MOID = 2.02623 au   T_jup = 3.378  [ hide covariance matrix ] Orbital Elements at Epoch 2457374.5 (2015-Dec-18.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1722562771845887 3.7837e-08   q 2.174281668807465 1.0379e-07 au tp 2457851.091293665464 (2017-Apr-07.59129367) 5.4198e-05 TDB node 196.2977769014805 5.0292e-05 deg peri 281.8140624231775 5.167e-05 deg i 3.951172191673353 4.0282e-06 deg   Orbit Determination Parameters    # obs. used (total)      529      data-arc span      7698 days (21.08 yr)      first obs. used      1999-12-14      last obs. used      2021-01-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53299      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:17:37   Additional Information  Jupiter MOID = 2.02623 au   T_jup = 3.378  Orbit Covariance (6×6)   e q tp node peri i e 1.431631609832462E-15 -3.911635565912971E-15 -2.454784229013494E-13 7.524218808567395E-15 1.305425232724365E-14 -1.211871998634581E-16 q -3.911635565912971E-15 1.077220321893294E-14 7.129788843457842E-13 -2.174821783932661E-14 -3.202647464248638E-14 5.290890389826872E-16 tp -2.454784229013494E-13 7.129788843457842E-13 2.937466042765885E-9 -3.264406677595317E-12 6.473255916726085E-10 1.087554792464867E-12 node 7.524218808567395E-15 -2.174821783932661E-14 -3.264406677595317E-12 2.52929095627968E-9 -2.523159604069159E-9 -9.27839295244789E-12 peri 1.305425232724365E-14 -3.202647464248638E-14 6.473255916726085E-10 -2.523159604069159E-9 2.669813799592958E-9 9.473804657536269E-12 i -1.211871998634581E-16 5.290890389826872E-16 1.087554792464867E-12 -9.27839295244789E-12 9.473804657536269E-12 1.622623090342931E-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 16.2   n/a MPO453648   117720 (2005 GB8)          Discovered 2005-Apr-02 by Mt. Lemmon Survey at Mt. Lemmon Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2005 GB8 = 2003 WN16  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 18:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin