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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2536590674703426 7.5724e-08  
a 2.596911337747905 3.0857e-08 AU
q 1.938181229511611 1.9226e-07 AU
i 13.20209484484328 9.1524e-06 deg
node 126.8265122546364 4.2324e-05 deg
peri 314.0126485814718 6.1495e-05 deg
M 32.04787950364513 4.2864e-05 deg
tp 2456864.424196056476
(2014-Jul-25.92419606)
0.00017994 JED
period 1528.565701643286
4.18
2.7244e-05
7.459e-08
d
yr
n .2355149010690099 4.1976e-09 deg/d
Q 3.255641445984198 3.8684e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      6220 days (17.03 yr)  
   first obs. used      1997-12-19  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62564  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 09:53:26  

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 15.7 mag n/a MPO321105  

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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