+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120777 (1998 DZ25) Classification: Main-belt Asteroid          SPK-ID: 2120777 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1280462177962322 6.455e-08   a 2.694584929034602 1.7691e-08 au q 2.349553520340992 1.7132e-07 au i 3.179417875995318 6.444e-06 deg node 23.0304437385026 9.5974e-05 deg peri 331.7011209755995 9.8142e-05 deg M 212.7164997275796 2.2302e-05 deg tp 2459861.479267688497 (2022-Oct-08.97926769) 0.00010265 TDB period 1615.608917005192 4.42 1.5911e-05 4.356e-08 d yr n .2228262026848191 2.1944e-09 deg/d Q 3.039616337728211 1.9957e-08 au   Orbit Determination Parameters    # obs. used (total)      298      data-arc span      8421 days (23.06 yr)      first obs. used      1998-02-23      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5446      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:08:05   Additional Information  Earth MOID = 1.34371 au   Jupiter MOID = 2.39078 au   T_jup = 3.356  [ hide covariance matrix ] Orbital Elements at Epoch 2457068.5 (2015-Feb-15.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1262818553505689 6.4296e-08   q 2.355692286067846 1.7025e-07 au tp 2456622.617869029994 (2013-Nov-26.11786903) 9.553e-05 TDB node 23.11861623066116 9.6168e-05 deg peri 330.5435644978657 9.8413e-05 deg i 3.177374437235924 6.432e-06 deg   Orbit Determination Parameters    # obs. used (total)      298      data-arc span      8421 days (23.06 yr)      first obs. used      1998-02-23      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5446      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:08:05   Additional Information  Jupiter MOID = 2.39078 au   T_jup = 3.356  Orbit Covariance (6×6)   e q tp node peri i e 4.134029292717077E-15 -1.090329932314985E-14 9.795415985367696E-13 2.608893047793728E-14 7.500079366298185E-14 -1.417902263653566E-15 q -1.090329932314985E-14 2.898591722220197E-14 -2.403885645302477E-12 -6.573897415773283E-14 -1.478706719264873E-13 3.804080616098385E-15 tp 9.795415985367696E-13 -2.403885645302477E-12 9.12604599986313E-9 5.038702841152977E-11 2.013626534747848E-9 -2.01605861175291E-12 node 2.608893047793728E-14 -6.573897415773283E-14 5.038702841152977E-11 9.248272562074861E-9 -9.222698689529693E-9 -7.172595350170804E-11 peri 7.500079366298185E-14 -1.478706719264873E-13 2.013626534747848E-9 -9.222698689529693E-9 9.685115925657539E-9 7.11844602266974E-11 i -1.417902263653566E-15 3.804080616098385E-15 -2.01605861175291E-12 -7.172595350170804E-11 7.11844602266974E-11 4.137001855996169E-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 16.45   n/a E2021B55   120777 (1998 DZ25)          Discovered 1998-Feb-23 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 Alternate Designations  1998 DZ25 = 2000 SM61  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-19 07:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin