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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04769494712078864 5.0396e-08  
a 2.620293505883159 1.8503e-08 au
q 2.495318745679115 1.3648e-07 au
i 3.890507830897412 4.4877e-06 deg
node 319.097955296642 7.2336e-05 deg
peri 283.2857261594244 9.1065e-05 deg
M 346.4503912841719 5.3542e-05 deg
tp 2459058.810610810471
(2020-Jul-28.31061081)
0.00023015 TDB
period 1549.256538105602
4.24
1.641e-05
4.493e-08
d
yr
n .2323695212157699 2.4613e-09 deg/d
Q 2.745268266087202 1.9386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      8162 days (22.35 yr)  
   first obs. used      1998-02-18  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52922  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:41:32  

Additional Information
 Earth MOID = 1.48573 au 
 Jupiter MOID = 2.2626 au 
 T_jup = 3.400 
[ 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 15.85   n/a E2021B10  

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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