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78026 (2002 JJ72)
Classification: Main-belt Asteroid          SPK-ID: 2078026
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683172404313775 3.0542e-08  
a 2.196454881793169 6.9943e-09 au
q 1.826753657357715 6.5819e-08 au
i 3.939845652004044 5.4141e-06 deg
node 184.2142769905703 4.9731e-05 deg
peri 128.3524374134523 5.2566e-05 deg
M 119.2861553812678 1.7704e-05 deg
tp 2458606.524334741040
(2019-May-03.02433474)
5.8185e-05 TDB
period 1189.000006244632
3.26
5.6793e-06
1.555e-08
d
yr
n .3027754399573414 1.4462e-09 deg/d
Q 2.566156106228623 8.1716e-09 au
  Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      8773 days (24.02 yr)  
   first obs. used      1996-10-13  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50858  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:31  

Additional Information
 Earth MOID = .816029 au 
 Jupiter MOID = 2.70124 au 
 T_jup = 3.647 
[ 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 16.2   n/a MPO502627  
rotation period rot_per 1.78 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

78026 (2002 JJ72)          Discovered 2002-May-08 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 JJ72 = 1999 LD22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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