+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100855 (1998 HH37) Classification: Main-belt Asteroid          SPK-ID: 2100855 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1489563878208105 4.3853e-08   a 2.396045537615269 9.7153e-09 au q 2.039139249277927 1.0877e-07 au i 1.288375132965011 4.3903e-06 deg node 295.4536639954916 0.00018935 deg peri 266.3484258114484 0.00018994 deg M 41.04170855858091 1.4809e-05 deg tp 2459046.058518238791 (2020-Jul-15.55851824) 5.5541e-05 TDB period 1354.693442030465 3.71 8.2393e-06 2.256e-08 d yr n .2657427790160544 1.6163e-09 deg/d Q 2.752951825952612 1.1162e-08 au   Orbit Determination Parameters    # obs. used (total)      786      data-arc span      9596 days (26.27 yr)      first obs. used      1994-02-11      last obs. used      2020-05-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51746      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:34:04   Additional Information  Earth MOID = 1.03573 au   Jupiter MOID = 2.20875 au   T_jup = 3.513  [ hide covariance matrix ] Orbital Elements at Epoch 2457115.5 (2015-Apr-03.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1495853232102942 4.3767e-08   q 2.037366816597002 1.0868e-07 au tp 2457691.246197659438 (2016-Oct-29.74619766) 5.4336e-05 TDB node 295.5394375056416 0.00018924 deg peri 266.2967953673285 0.00018982 deg i 1.288957961538917 4.392e-06 deg   Orbit Determination Parameters    # obs. used (total)      786      data-arc span      9596 days (26.27 yr)      first obs. used      1994-02-11      last obs. used      2020-05-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51746      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:34:04   Additional Information  Jupiter MOID = 2.20875 au   T_jup = 3.513  Orbit Covariance (6×6)   e q tp node peri i e 1.915557428555604E-15 -4.745017932226036E-15 -5.22893682004192E-13 -7.163130985150445E-15 -6.872045911320826E-14 -4.695702224930863E-16 q -4.745017932226036E-15 1.181117087822875E-14 1.272632450969802E-12 1.848917956797054E-14 1.544852969075663E-13 1.272402721641619E-15 tp -5.22893682004192E-13 1.272632450969802E-12 2.952449922117669E-9 -9.018880876415283E-12 8.167633864971086E-10 -1.110637879768841E-13 node -7.163130985150445E-15 1.848917956797054E-14 -9.018880876415283E-12 3.581059871523625E-8 -3.580342983187554E-8 1.513826651303121E-10 peri -6.872045911320826E-14 1.544852969075663E-13 8.167633864971086E-10 -3.580342983187554E-8 3.603055213400686E-8 -1.513948479174517E-10 i -4.695702224930863E-16 1.272402721641619E-15 -1.110637879768841E-13 1.513826651303121E-10 -1.513948479174517E-10 1.928932555527898E-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 16.08   n/a E2021B55   100855 (1998 HH37)          Discovered 1998-Apr-20 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1998 HH37 = 2002 LC23  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 21:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin