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JPL Small-Body Database Browser
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379890 (2012 HE68)
Classification: Inner Main-belt Asteroid          SPK-ID: 2379890
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04942149942100586 6.9435e-08  
a 1.969937255855459 2.2224e-08 au
q 1.87258000290578 1.4362e-07 au
i 22.21585598732567 9.3626e-06 deg
node 202.7576289330561 2.2081e-05 deg
peri 298.541797682266 0.00010864 deg
M 50.90449570308712 0.00010969 deg
tp 2458857.699194862561
(2020-Jan-09.19919486)
0.00030698 TDB
period 1009.896849766068
2.76
1.709e-05
4.679e-08
d
yr
n .3564720496785294 6.0325e-09 deg/d
Q 2.067294508805137 2.3323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      1999-10-10  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64732  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:42:25  

Additional Information
 Earth MOID = .910745 au 
 Jupiter MOID = 2.93989 au 
 T_jup = 3.779 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456925.5 (2014-Sep-25.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04947756353568718 6.9436e-08  
q 1.872520955778247 1.4365e-07 au
tp 2456837.902385556263
(2014-Jun-29.40238556)
0.00029816 TDB
node 202.7746254751928 2.2078e-05 deg
peri 298.6111870248261 0.00010848 deg
i 22.21652697375044 9.3627e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      1999-10-10  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64732  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:42:25  

Additional Information
 Jupiter MOID = 2.93989 au 
 T_jup = 3.779 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.82140130160643E-15 -9.873344551558551E-15 -3.655914946735502E-12 -1.50872902793305E-14 -1.34310094125555E-12 -1.530040201606587E-14
q -9.873344551558551E-15 2.063578044372897E-14 8.4282920401504E-12 3.467695735363006E-14 3.068669111040675E-12 4.041195382542866E-14
tp -3.655914946735502E-12 8.4282920401504E-12 8.890171320323598E-8 -7.887322579366704E-11 3.17146456651485E-8 7.965141789976242E-11
node -1.50872902793305E-14 3.467695735363006E-14 -7.887322579366704E-11 4.874578829877252E-10 -4.774775119372678E-10 4.118683890490438E-11
peri -1.34310094125555E-12 3.068669111040675E-12 3.17146456651485E-8 -4.774775119372678E-10 1.176722373740115E-8 -1.124360063392233E-11
i -1.530040201606587E-14 4.041195382542866E-14 7.965141789976242E-11 4.118683890490438E-11 -1.124360063392233E-11 8.766097378840273E-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 17.4   n/a MPO450361  

379890 (2012 HE68)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: Last Updated: 2013-11-20

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2058-Feb-12 19:06 00:02 Juno 0.0318733928325691 0.0318655023880953 0.0318812927697592 5.77539439711087 5.77539433102083 2472772.296035050 2.13127971254289 967.91829578455 77.5063984195744 -66.4287664759544 56393.5692826835 T 9 CATAB v2.0e-lin.ifort 2019-Jul-14 14:42:27 2019-Jul-14 14:42

Alternate Designations
 2012 HE68 = 1999 TZ169 = 2010 TW87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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