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JPL Small-Body Database Browser
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108168 (2001 HG8)
Classification: Main-belt Asteroid          SPK-ID: 2108168
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1507523617407113 5.0363e-08  
a 2.580487575991636 1.6548e-08 au
q 2.191472979468334 1.31e-07 au
i 2.777460666045486 5.9775e-06 deg
node 40.63172582660354 8.6251e-05 deg
peri 310.1134873904178 8.8021e-05 deg
M 68.95735964665826 1.522e-05 deg
tp 2458710.479158088662
(2019-Aug-14.97915809)
6.4578e-05 TDB
period 1514.08788885004
4.15
1.4564e-05
3.987e-08
d
yr
n .2377669107923598 2.2871e-09 deg/d
Q 2.969502172514939 1.9043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:03:42  

Additional Information
 Earth MOID = 1.18693 au 
 Jupiter MOID = 2.45374 au 
 T_jup = 3.407 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457280.5 (2015-Sep-15.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527685590510083 5.0626e-08  
q 2.185652935113488 1.3193e-07 au
tp 2457195.162937676607
(2015-Jun-21.66293768)
6.7851e-05 TDB
node 40.64483655103935 8.6158e-05 deg
peri 309.8070415892656 8.7872e-05 deg
i 2.781002006413677 5.9816e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:03:42  

Additional Information
 Jupiter MOID = 2.45374 au 
 T_jup = 3.407 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.56300073687856E-15 -6.64163220035427E-15 1.294692169315771E-12 -2.412318687286478E-14 3.236216291673124E-13 3.409693022123678E-16
q -6.64163220035427E-15 1.740650889513963E-14 -3.740629834575124E-12 6.2902270818529E-14 -9.306976460663104E-13 -7.276623488407679E-16
tp 1.294692169315771E-12 -3.740629834575124E-12 4.603734323456182E-9 -2.855612377147579E-11 1.18542672360251E-9 -6.470431461079399E-13
node -2.412318687286478E-14 6.2902270818529E-14 -2.855612377147579E-11 7.423142534977652E-9 -7.420954779880806E-9 -1.457399419153364E-10
peri 3.236216291673124E-13 -9.306976460663104E-13 1.18542672360251E-9 -7.420954779880806E-9 7.721418799828436E-9 1.454038077186666E-10
i 3.409693022123678E-16 -7.276623488407679E-16 -6.470431461079399E-13 -1.457399419153364E-10 1.454038077186666E-10 3.577988403343809E-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 16.1   n/a MPO449647  

108168 (2001 HG8)          Discovered 2001-Apr-18 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 HG8 = 2003 YN75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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