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JPL Small-Body Database Browser
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85941 (1999 DC9)
Classification: Main-belt Asteroid          SPK-ID: 2085941
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754508471447124 5.4881e-08  
a 2.658017849445099 2.0388e-08 au
q 2.19166636603419 1.4138e-07 au
i 16.81175241888231 5.8886e-06 deg
node 111.8732218631248 1.8654e-05 deg
peri 94.64287651161088 2.487e-05 deg
M 190.5733241816481 1.7272e-05 deg
tp 2459345.428440858540
(2021-May-10.92844086)
7.9342e-05 TDB
period 1582.833620584005
4.33
1.8212e-05
4.986e-08
d
yr
n .2274402030120979 2.6169e-09 deg/d
Q 3.124369332856008 2.3965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      7160 days (19.60 yr)  
   first obs. used      1999-02-10  
   last obs. used      2018-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5794  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 10:58:48  

Additional Information
 Earth MOID = 1.26198 au 
 Jupiter MOID = 2.12201 au 
 T_jup = 3.305 
[ 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 14.6   n/a MPO320054  

85941 (1999 DC9)          Discovered 1999-Feb-18 by NEAT at Haleakala
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 DC9 = 2003 AX36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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