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120157 (2003 HC10)
Classification: Main-belt Asteroid          SPK-ID: 2120157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03237704356110611 5.5462e-08  
a 2.678343428910951 1.6777e-08 au
q 2.591626587041499 1.5241e-07 au
i 3.852417910035648 5.7999e-06 deg
node 44.94630026675004 8.2881e-05 deg
peri 189.7371249762566 0.00012403 deg
M 349.3598711876965 9.1861e-05 deg
tp 2459247.819724434554
(2021-Feb-02.31972443)
0.00040851 TDB
period 1601.023925268771
4.38
1.5043e-05
4.119e-08
d
yr
n .2248561025966961 2.1127e-09 deg/d
Q 2.765060270780404 1.732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      9510 days (26.04 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:59:06  

Additional Information
 Earth MOID = 1.5786 au 
 Jupiter MOID = 2.20567 au 
 T_jup = 3.374 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457058.5 (2015-Feb-05.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03414943887799892 5.5503e-08  
q 2.587577616747093 1.5294e-07 au
tp 2457640.169051248739
(2016-Sep-08.66905125)
0.00038599 TDB
node 45.02827191270665 8.2931e-05 deg
peri 188.4594376526462 0.00012022 deg
i 3.851443934175367 5.7953e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      9510 days (26.04 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:59:06  

Additional Information
 Jupiter MOID = 2.20567 au 
 T_jup = 3.374 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.080572554130101E-15 -8.442889929264108E-15 -5.851985245630567E-12 -1.41129322225585E-14 -1.182023123627495E-12 -1.419424355412217E-15
q -8.442889929264108E-15 2.339126162696451E-14 1.528563469772404E-11 4.035537529865013E-14 3.045087474534294E-12 3.898024701283234E-15
tp -5.851985245630567E-12 1.528563469772404E-11 1.489875820685666E-7 6.282788003789888E-11 3.361536828068238E-8 1.900669502788606E-11
node -1.41129322225585E-14 4.035537529865013E-14 6.282788003789888E-11 6.877576658893369E-9 -6.848072461713696E-9 -1.565470161133272E-10
peri -1.182023123627495E-12 3.045087474534294E-12 3.361536828068238E-8 -6.848072461713696E-9 1.445388038962218E-8 1.60491076022693E-10
i -1.419424355412217E-15 3.898024701283234E-15 1.900669502788606E-11 -1.565470161133272E-10 1.60491076022693E-10 3.358536863599997E-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 16.41   n/a E2021B55  

120157 (2003 HC10)          Discovered 2003-Apr-25 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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