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120901 (1998 SD26)
Classification: Main-belt Asteroid          SPK-ID: 2120901
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1665647035984173 3.9366e-08  
a 2.232290345687814 8.5987e-09 au
q 1.860469565912715 8.6871e-08 au
i 4.919994327509548 4.0444e-06 deg
node 106.8498693502292 5.2836e-05 deg
peri 248.2889789950258 5.424e-05 deg
M 191.8253002796604 1.3529e-05 deg
tp 2459569.592167673510
(2021-Dec-21.09216767)		 4.6854e-05 TDB
period 1218.216418421739
3.34		 7.0388e-06
1.927e-08		 d
yr
n .2955139945219244 1.7075e-09 deg/d
Q 2.604111125462913 1.0031e-08 au
   Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      7879 days (21.57 yr)  
   first obs. used      1998-09-22  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54039  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:41:02  

Additional Information
 Earth MOID = .862195 au 
 Jupiter MOID = 2.83378 au 
 T_jup = 3.618 
[ 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 16.2   n/a MPO302627  

120901 (1998 SD26)          Discovered 1998-Sep-22 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 SD26 = 2001 OW9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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