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278361 (2007 JJ43)
Classification: TransNeptunian Object          SPK-ID: 2278361
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1664645643264323 3.1685e-05  
a 48.38461069462943 0.0022232 au
q 40.33028755524391 0.00069142 au
i 12.02161395631464 0.00013175 deg
node 272.5826637041463 0.00031955 deg
peri 7.628918516640074 0.0080555 deg
M 342.3285820323322 0.0061577 deg
tp 2465034.818118600357
(2036-Dec-07.31811860)
1.8412 TDB
period 122930.4024538798
336.57
8.4726
0.0232
d
yr
n .00292848630455808 2.0184e-07 deg/d
Q 56.43893383401496 0.0025932 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      4813 days (13.18 yr)  
   first obs. used      2002-05-10  
   last obs. used      2015-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .38436  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 16:09:40  

Additional Information
 Earth MOID = 39.3142 au 
 Jupiter MOID = 35.1116 au 
 T_jup = 5.989 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.5   n/a MPO386165  
rotation period rot_per 12.097 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szabo, R.; Szabo, Gy.M.; Kiss, L.L; et al (2015) Astrophys. J. Let. 804, L45.]

278361 (2007 JJ43)          Discovered 2007-May-14 by Palomar at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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