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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2537808685149943 6.5214e-08  
a 2.595401977025554 2.6792e-08 au
q 1.936738609150476 1.5643e-07 au
i 13.20120414398587 8.955e-06 deg
node 126.8165121867478 3.3526e-05 deg
peri 313.8509127976814 5.2621e-05 deg
M 173.6104281005055 4.0313e-05 deg
tp 2456863.989944196682
(2014-Jul-25.48994420)
0.00016153 JED
period 1527.23326006488
4.18
2.3648e-05
6.474e-08
d
yr
n .2357203771116839 3.65e-09 deg/d
Q 3.254065344900632 3.3592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      368  
   data-arc span      6321 days (17.31 yr)  
   first obs. used      1997-12-19  
   last obs. used      2015-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58162  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 23:06:57  

Additional Information
 Earth MOID = .975162 au 
 Jupiter MOID = 2.05788 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 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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