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221996 (1997 YN1)
Classification: Main-belt Asteroid          SPK-ID: 2221996
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .253659103276145 6.5798e-08  
a 2.596911321415383 2.6153e-08 AU
q 1.938181124337488 1.5839e-07 AU
i 13.20209451114253 8.9898e-06 deg
node 126.82652008552 3.3579e-05 deg
peri 314.0126286810012 5.2674e-05 deg
M 32.04789812581766 3.8466e-05 deg
tp 2456864.424118270151
(2014-Jul-25.92411827)
0.00016166 JED
period 1528.565687223079
4.18
2.309e-05
6.322e-08
d
yr
n .235514903290814 3.5577e-09 deg/d
Q 3.255641518493278 3.2786e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      6309 days (17.27 yr)  
   first obs. used      1997-12-19  
   last obs. used      2015-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5766  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 23:36:16  

Additional Information
 Earth MOID = .977766 AU 
 T_jup = 3.334 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a MPO325953  

221996 (1997 YN1)          Discovered 1997-Dec-19 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20091102/Numbers.arcLast Updated: 2009-11-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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