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JPL Small-Body Database Browser
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91012 (1998 DY)
Classification: Main-belt Asteroid          SPK-ID: 2091012
[ 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04769495540550422 5.2028e-08  
a 2.620293496582765 2.5252e-08 au
q 2.495318715113918 1.4542e-07 au
i 3.890516674676062 7.0363e-06 deg
node 319.0979395500037 7.3376e-05 deg
peri 283.2856942892691 0.00012684 deg
M 346.4504443604136 0.00011146 deg
tp 2459058.810382086927
(2020-Jul-28.31038209)		 0.00048004 TDB
period 1549.256529857273
4.24		 2.2395e-05
6.131e-08		 d
yr
n .2323695224529183 3.359e-09 deg/d
Q 2.745268278051613 2.6456e-08 au
   Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      8016 days (21.95 yr)  
   first obs. used      1998-02-18  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:22:05  

Additional Information
 Earth MOID = 1.48573 au 
 Jupiter MOID = 2.2626 au 
 T_jup = 3.400 
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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO320097  

91012 (1998 DY)          Discovered 1998-Feb-18 by Klet at Klet
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 DY = 2000 TX45 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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