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216535 (2001 QB261)
Classification: Main-belt Asteroid          SPK-ID: 2216535
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1395126884163666 4.1974e-08  
a 2.663451067110407 1.4539e-08 au
q 2.291865848272394 1.1304e-07 au
i 12.07342062684832 4.5268e-06 deg
node 197.0321655598718 1.9333e-05 deg
peri 151.8115554520041 2.4605e-05 deg
M 164.5139352160375 1.5756e-05 deg
tp 2458474.952749709774
(2018-Dec-22.45274971)
6.685e-05 TDB
period 1587.689272410152
4.35
1.3e-05
3.559e-08
d
yr
n .2267446195271641 1.8566e-09 deg/d
Q 3.035036285948421 1.6567e-08 au
  Orbit Determination Parameters
   # obs. used (total)      446  
   data-arc span      7648 days (20.94 yr)  
   first obs. used      2000-05-09  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:41:47  

Additional Information
 Earth MOID = 1.29259 au 
 Jupiter MOID = 2.45258 au 
 T_jup = 3.339 
[ 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 15.87   n/a MPCxxxxx  

216535 (2001 QB261)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

Alternate Designations
 2001 QB261 = 2000 JY87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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