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2101 Adonis (1936 CA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2002101
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7639969451829166 6.5828e-08  
a 1.874841297944183 1.3137e-09 au
q .4424682736120527 1.2323e-07 au
i 1.322472468079853 9.094e-06 deg
node 349.4862961993228 0.00042964 deg
peri 43.60816556300155 0.00042995 deg
M 336.1573364011426 9.4212e-06 deg
tp 2459062.600838533427
(2020-Aug-01.10083853)
2.4543e-05 TDB
period 937.6595773093536
2.57
9.8554e-07
2.698e-09
d
yr
n .3839346482579876 4.0354e-10 deg/d
Q 3.307214322276312 2.3174e-09 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   # delay obs. used      0  
   # Doppler obs. used      5  
   data-arc span      30799 days (84.32 yr)  
   first obs. used      1936-02-12  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-09 07:12:07  

Additional Information
 Earth MOID = .0115889 au 
 Jupiter MOID = 2.14319 au 
 T_jup = 3.550 
[ 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 18.8   n/a MPO256878  
diameter diameter 0.6 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)

2101 Adonis (1936 CA)          Discovered 1936-Feb-12 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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