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JPL Small-Body Database Browser
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379875 (2012 HP39)
Classification: Main-belt Asteroid          SPK-ID: 2379875
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3911255880814261 5.4959e-08  
a 3.099756273603316 3.9549e-08 au
q 1.887362278181129 1.576e-07 au
i 14.95858956251837 1.4984e-05 deg
node 4.989085528253323 2.1746e-05 deg
peri 273.4666541902163 3.0443e-05 deg
M 146.2520383338221 1.7104e-05 deg
tp 2458190.678737769566
(2018-Mar-13.17873777)
8.7711e-05 TDB
period 1993.378401588651
5.46
3.8149e-05
1.044e-07
d
yr
n .1805979234615429 3.4563e-09 deg/d
Q 4.312150269025503 5.5017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      6833 days (18.71 yr)  
   first obs. used      2001-03-04  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62525  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 21:14:27  

Additional Information
 Earth MOID = .942262 au 
 Jupiter MOID = 1.5042 au 
 T_jup = 3.051 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457509.5 (2016-May-01.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3921330061324421 5.4859e-08  
q 1.881783415628328 1.5736e-07 au
tp 2458190.544286370036
(2018-Mar-13.04428637)
8.7323e-05 TDB
node 5.018530819526096 2.1738e-05 deg
peri 273.5336352080521 3.0467e-05 deg
i 14.97133054118155 1.4996e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      6833 days (18.71 yr)  
   first obs. used      2001-03-04  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62525  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 21:14:27  

Additional Information
 Jupiter MOID = 1.5042 au 
 T_jup = 3.051 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.009508901180487E-15 -8.566215769109302E-15 2.225295390770024E-12 -1.962532581481491E-14 3.549403132503519E-13 -3.510175770422805E-14
q -8.566215769109302E-15 2.476088563297135E-14 -6.121486975892643E-12 5.599523117649675E-14 -9.955763675052931E-13 9.331607522707974E-14
tp 2.225295390770024E-12 -6.121486975892643E-12 7.625316551780747E-9 -4.96689232006101E-11 1.843897529607889E-9 -1.021139427835943E-10
node -1.962532581481491E-14 5.599523117649675E-14 -4.96689232006101E-11 4.725192376276812E-10 -4.661088554610878E-10 -1.112603273908971E-10
peri 3.549403132503519E-13 -9.955763675052931E-13 1.843897529607889E-9 -4.661088554610878E-10 9.282247128114458E-10 8.426088373082423E-11
i -3.510175770422805E-14 9.331607522707974E-14 -1.021139427835943E-10 -1.112603273908971E-10 8.426088373082423E-11 2.248794246573105E-10

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 16.3   n/a MPO402526  

379875 (2012 HP39)          Discovered 2007-Jul-19 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2012 HP39 = 2007 RT150 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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