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85557 (1997 YY16)
Classification: Main-belt Asteroid          SPK-ID: 2085557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620085394997878 2.9198e-08  
a 2.292834122307023 7.0807e-09 au
q 1.921375414836784 6.7873e-08 au
i 5.383284320566822 3.4724e-06 deg
node 354.7540417314491 3.4448e-05 deg
peri 46.74659596078686 3.5886e-05 deg
M 284.8866555423848 1.1242e-05 deg
tp 2459661.089118974731
(2022-Mar-22.58911897)
4.0143e-05 TDB
period 1268.111325873018
3.47
5.8742e-06
1.608e-08
d
yr
n .2838867476813692 1.315e-09 deg/d
Q 2.664292829777261 8.2278e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      12263 days (33.57 yr)  
   first obs. used      1988-01-12  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48969  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:54:05  

Additional Information
 Earth MOID = .933198 au 
 Jupiter MOID = 2.7572 au 
 T_jup = 3.574 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.16   n/a MPO637174  

85557 (1997 YY16)          Discovered 1997-Dec-30 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1997 YY16 = 1988 AG4 = 2002 AN5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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