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55904 (1998 DR1)
Classification: Main-belt Asteroid          SPK-ID: 2055904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06653563660790369 4.6918e-08  
a 2.86321061804872 1.3096e-08 au
q 2.672705076834339 1.3856e-07 au
i 2.569027736119757 6.1081e-06 deg
node 150.2768895437389 0.0001037 deg
peri 263.5763149488537 0.00011543 deg
M 334.5576686559112 4.9035e-05 deg
tp 2459325.564132298958
(2021-Apr-21.06413230)
0.00024108 TDB
period 1769.61328813468
4.84
1.2141e-05
3.324e-08
d
yr
n .2034342770896968 1.3957e-09 deg/d
Q 3.053716159263101 1.3967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      10683 days (29.25 yr)  
   first obs. used      1991-10-07  
   last obs. used      2021-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:35:16  

Additional Information
 Earth MOID = 1.68448 au 
 Jupiter MOID = 2.18276 au 
 T_jup = 3.296 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.30   n/a E2021B10  

55904 (1998 DR1)          Discovered 1998-Feb-20 by Klet at Klet
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 DR1 = 1998 ED22 = 2001 UP116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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