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JPL Small-Body Database Browser
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161484 (2004 HU42)
Classification: Jupiter Trojan          SPK-ID: 2161484
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02412140832510347 1.014e-07  
a 5.211929618698621 2.5771e-07 au
q 5.08621053620429 6.5279e-07 au
i 17.38804762559642 1.1473e-05 deg
node 33.30760867513756 2.7075e-05 deg
peri 308.2534596325504 0.00028242 deg
M 332.2301418732105 0.00029299 deg
tp 2458935.748930242602
(2020-Mar-27.24893024)
0.0035451 TDB
period 4346.06523145711
11.90
0.00032234
8.825e-07
d
yr
n .08283354731868635 6.1436e-09 deg/d
Q 5.337648701192951 2.6392e-07 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6820 days (18.67 yr)  
   first obs. used      1997-10-06  
   last obs. used      2016-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61827  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-11 08:06:31  

Additional Information
 Earth MOID = 4.1058 au 
 Jupiter MOID = .153639 au 
 T_jup = 2.908 
[ 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 12.6   n/a MPO382104  

161484 (2004 HU42)          Discovered 2004-Apr-20 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 2004 HU42 = 1997 TG29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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