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2984 Chaucer (1981 YD)
Classification: Main-belt Asteroid          SPK-ID: 2002984
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1344147087083075 3.7535e-08  
a 2.470062110849821 1.3937e-08 au
q 2.138049431728515 9.4472e-08 au
i 3.053292478739703 5.6138e-06 deg
node 81.81798671099331 9.6001e-05 deg
peri 46.45777849865028 0.00010035 deg
M 296.2757939005808 2.9944e-05 deg
tp 2457851.493324251918
(2017-Apr-07.99332425)
0.00011912 JED
period 1417.947782506998
3.88
1.2001e-05
3.286e-08
d
yr
n .2538880517613301 2.1488e-09 deg/d
Q 2.802074789971127 1.581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      22712 days (62.18 yr)  
   first obs. used      1953-09-17  
   last obs. used      2015-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49445  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:46:04  

Additional Information
 Earth MOID = 1.15313 au 
 Jupiter MOID = 2.25234 au 
 T_jup = 3.470 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO347544  

2984 Chaucer (1981 YD)          Discovered 1981-Dec-30 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 YD = 1963 FB = 1965 UK1 = 1971 FZ = 1971 JA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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