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JPL Small-Body Database Browser
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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 ]

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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .76399691887438 6.6858e-08  
a 1.874841298841717 1.3659e-09 au
q .4424683231482045 1.2518e-07 au
i 1.322473724255831 9.4449e-06 deg
node 349.4862860319894 0.00042986 deg
peri 43.60818981696289 0.00043032 deg
M 336.157323037657 1.1011e-05 deg
tp 2459062.600873384688
(2020-Aug-01.10087338)
2.8692e-05 TDB
period 937.6595779826761
2.57
1.0247e-06
2.805e-09
d
yr
n .3839346479822886 4.1956e-10 deg/d
Q 3.30721427453523 2.4094e-09 au
  Orbit Determination Parameters
   # obs. used (total)      138  
   # delay obs. used      0  
   # Doppler obs. used      5  
   data-arc span      30785 days (84.28 yr)  
   first obs. used      1936-02-12  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-27 07:01:43  

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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