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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2536590386873602 8.2485e-08  
a 2.596911361070537 3.8967e-08 AU
q 1.938181321665101 2.1791e-07 AU
i 13.20209574382363 9.2225e-06 deg
node 126.8265209328366 4.5852e-05 deg
peri 314.0126647315113 6.8051e-05 deg
M 32.04784868908627 5.2779e-05 deg
tp 2456864.424325062455
(2014-Jul-25.92432506)
0.00022134 JED
period 1528.565722235157
4.18
3.4405e-05
9.42e-08
d
yr
n .2355148978963019 5.3009e-09 deg/d
Q 3.255641400475974 4.8852e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      209  
   data-arc span      6156 days (16.85 yr)  
   first obs. used      1997-12-19  
   last obs. used      2014-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59758  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 17:43:51  

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 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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