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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2533536092680126 1.019e-07  
a 2.595961408587436 6.9144e-08 AU
q 1.938265216201335 2.911e-07 AU
i 13.20198794517873 1.0241e-05 deg
node 126.8270269391405 5.3019e-05 deg
peri 314.0238790851089 9.7964e-05 deg
M 344.9316152262926 9.3252e-05 deg
tp 2456864.445498232100
(2014-Jul-25.94549823)
0.00039819 JED
period 1527.72707289265
4.18
6.1037e-05
1.671e-07
d
yr
n .2356441843492136 9.4147e-09 deg/d
Q 3.253657600973537 8.6662e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      5829 days (15.96 yr)  
   first obs. used      1997-12-19  
   last obs. used      2013-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56559  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-22 04:58:19  

Additional Information
 Earth MOID = .977488 AU 
 T_jup = 3.335 
[ 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 MPO270878  

221996 (1997 YN1)          Discovered 1997-Dec-19 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
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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