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120278 (2004 HL17)
Classification: Main-belt Asteroid          SPK-ID: 2120278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594006459174057 4.7978e-08  
a 2.269899651490694 1.691e-08 au
q 1.908076180875383 1.0527e-07 au
i 6.638343315050281 7.7165e-06 deg
node 24.57494895781151 4.5627e-05 deg
peri 227.1885580279406 5.1983e-05 deg
M 236.7530906029531 2.594e-05 deg
tp 2459428.143574381511
(2021-Aug-01.64357438)
9.1086e-05 TDB
period 1249.132230013004
3.42
1.3958e-05
3.821e-08
d
yr
n .2882000730989482 3.2204e-09 deg/d
Q 2.631723122106004 1.9605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      8311 days (22.75 yr)  
   first obs. used      1997-04-03  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62402  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 17:02:14  

Additional Information
 Earth MOID = .901582 au 
 Jupiter MOID = 2.4155 au 
 T_jup = 3.588 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO453673  

120278 (2004 HL17)          Discovered 2004-Apr-16 by Siding Spring Survey at Siding Spring
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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