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344450 (2002 JJ120)
Classification: Main-belt Asteroid          SPK-ID: 2344450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039590612730567 5.3792e-08  
a 2.620512415679271 1.8482e-08 au
q 2.348086404890864 1.3725e-07 au
i 13.83381875581846 4.7946e-06 deg
node 113.2877526861375 2.1165e-05 deg
peri 111.8146941825034 3.2092e-05 deg
M 86.88741032649085 2.347e-05 deg
tp 2458626.534006173734
(2019-May-23.03400617)
0.00010006 TDB
period 1549.450688788792
4.24
1.6392e-05
4.488e-08
d
yr
n .2323404046381188 2.458e-09 deg/d
Q 2.892938426467679 2.0403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      281  
   data-arc span      8674 days (23.75 yr)  
   first obs. used      1997-01-03  
   last obs. used      2020-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:02:43  

Additional Information
 Earth MOID = 1.37568 au 
 Jupiter MOID = 2.23659 au 
 T_jup = 3.356 
[ show covariance matrix ]

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 16.2   n/a MPO476591  
rotation period rot_per 6.049 h n/a LCDB (Rev. 2020-October); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

344450 (2002 JJ120)          Discovered 2002-May-05 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1950-Feb-17 09:49 00:10 Europ 0.00381065747414717 0.00380078450366282 0.00382062947612595 2.91088596296966 2.91088500479059 2433329.909097104 9.89929727550226 1093.95117236892 64.8832053514221 -63.3438563105583 7843.63989917437 T 17 CATAB v2.0f-lin.ifort 2020-Nov-11 17:02:44 2020-Nov-11 17:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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