+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26423 (1999 XN140) Classification: Main-belt Asteroid          SPK-ID: 2026423 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2409451447679748 3.3451e-08   a 2.259989816233622 8.3932e-09 au q 1.715456242787063 7.7289e-08 au i 5.701149351512369 3.5649e-06 deg node 109.6158709984065 4.4329e-05 deg peri 187.0543317428724 4.5392e-05 deg M 230.499842091435 9.5315e-06 deg tp 2459646.901810516123 (2022-Mar-08.40181052) 3.3186e-05 TDB period 1240.961048860432 3.40 6.913e-06 1.893e-08 d yr n .2900977434630894 1.6161e-09 deg/d Q 2.804523389680181 1.0415e-08 au   Orbit Determination Parameters    # obs. used (total)      868      data-arc span      8751 days (23.96 yr)      first obs. used      1997-02-01      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50231      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 03:19:22   Additional Information  Earth MOID = .69772 au   Jupiter MOID = 2.41157 au   T_jup = 3.575  [ hide covariance matrix ] Orbital Elements at Epoch 2456572.5 (2013-Oct-07.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2405178025847965 3.336e-08   q 1.716912853478749 7.7037e-08 au tp 2457165.671335154354 (2015-May-23.17133515) 3.3835e-05 TDB node 109.650056583145 4.4331e-05 deg peri 187.0225739394857 4.5405e-05 deg i 5.700372812672083 3.5641e-06 deg   Orbit Determination Parameters    # obs. used (total)      868      data-arc span      8751 days (23.96 yr)      first obs. used      1997-02-01      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50231      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 03:19:22   Additional Information  Jupiter MOID = 2.41157 au   T_jup = 3.575  Orbit Covariance (6×6)   e q tp node peri i e 1.112912907820346E-15 -2.561521365286038E-15 3.416087144201915E-13 1.794809857118382E-14 5.353549957678015E-14 -2.101543564598215E-15 q -2.561521365286038E-15 5.934758009455603E-15 -8.292905365882458E-13 -4.151147916129902E-14 -1.436224862168565E-13 5.067277765039174E-15 tp 3.416087144201915E-13 -8.292905365882458E-13 1.144817873217433E-9 2.542232086650415E-11 3.448347026388473E-10 -2.86952211756188E-12 node 1.794809857118382E-14 -4.151147916129902E-14 2.542232086650415E-11 1.965210052785046E-9 -1.948224958946711E-9 2.206679022450384E-11 peri 5.353549957678015E-14 -1.436224862168565E-13 3.448347026388473E-10 -1.948224958946711E-9 2.061658117718803E-9 -2.285610357601223E-11 i -2.101543564598215E-15 5.067277765039174E-15 -2.86952211756188E-12 2.206679022450384E-11 -2.285610357601223E-11 1.270269396262957E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.63   n/a E2021B10   26423 (1999 XN140)          Discovered 1999-Dec-02 by Spacewatch at Kitt Peak Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 XN140 = 2001 KK14  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-03 03:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin