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JPL Small-Body Database Browser
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(2018 XC4)
Classification: Apollo [NEO]          SPK-ID: 3836892
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3104571061144226 2.0152e-06  
a 1.267790154453623 4.2029e-06 au
q .8741956919415943 8.0511e-07 au
i 2.171096066406787 5.3529e-05 deg
node 95.08818070760147 0.00044323 deg
peri 52.37082038479767 0.00067254 deg
M 331.9815658745437 0.001535 deg
tp 2459041.079888398908
(2020-Jul-10.57988840)
0.0024249 TDB
period 521.3981537367246
1.43
0.0025927
7.098e-06
d
yr
n .6904512365837392 3.4334e-06 deg/d
Q 1.661384616965652 5.5077e-06 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      6 days  
   first obs. used      2018-12-13  
   last obs. used      2018-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .40597  
   source      ORB  
   producer      Giorgini  
   solution date      2019-Feb-27 23:22:27  

Additional Information
 Earth MOID = .00351278 au 
 Jupiter MOID = 3.34427 au 
 T_jup = 5.042 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.3   .49875 E2018Y73 autocmod 2.6q

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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