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120558 (1995 DN4)
Classification: Main-belt Asteroid          SPK-ID: 2120558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670119594019474 3.7873e-08  
a 3.112163769485062 2.4844e-08 au
q 2.592395200363611 1.1956e-07 au
i 11.21242724247813 6.9143e-06 deg
node 318.706466996498 2.3097e-05 deg
peri 101.0097500958669 3.1877e-05 deg
M 282.3688412431779 2.1206e-05 deg
tp 2459432.939800760141
(2021-Aug-06.43980076)
0.0001191 TDB
period 2005.358811676504
5.49
2.4013e-05
6.574e-08
d
yr
n .1795189957546977 2.1496e-09 deg/d
Q 3.631932338606513 2.8993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      9289 days (25.43 yr)  
   first obs. used      1995-02-21  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:09:47  

Additional Information
 Earth MOID = 1.63424 au 
 Jupiter MOID = 1.80863 au 
 T_jup = 3.168 
[ 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 15.3   n/a MPO453676  

120558 (1995 DN4)          Discovered 1995-Feb-21 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1995 DN4 = 2004 RM220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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