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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345608378711886 3.9683e-08  
a 2.470266012284119 1.4138e-08 AU
q 2.137864947906448 9.9696e-08 AU
i 3.053470063416739 6.7098e-06 deg
node 81.82896813852554 0.00010576 deg
peri 46.31416335693471 0.00011093 deg
M 144.1306576578818 3.2756e-05 deg
tp 2456432.735964580023
(2013-May-20.23596458)
0.00012714 JED
period 1418.123361626208
3.88
1.2174e-05
3.333e-08
d
yr
n .2538566176550228 2.1793e-09 deg/d
Q 2.80266707666179 1.604e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1191  
   data-arc span      22246 days (60.91 yr)  
   first obs. used      1953-09-17  
   last obs. used      2014-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49829  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:42:36  

Additional Information
 Earth MOID = 1.15453 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 13.0 mag n/a MPO256884  

2984 Chaucer (1981 YD)          Discovered 1981-Dec-30 by Bowell, E. at Flagstaff (AM) (688)
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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