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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345608392034029 3.9701e-08  
a 2.470266011736339 1.4147e-08 AU
q 2.137864944141454 9.9756e-08 AU
i 3.053469970784659 6.7124e-06 deg
node 81.8289717953232 0.00010603 deg
peri 46.314160860346 0.00011121 deg
M 144.1306568954311 3.2765e-05 deg
tp 2456432.735967772345
(2013-May-20.23596777)
0.00012718 JED
period 1418.123361154507
3.88
1.2182e-05
3.335e-08
d
yr
n .2538566177394615 2.1807e-09 deg/d
Q 2.802667079331224 1.6051e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      22226 days (60.85 yr)  
   first obs. used      1953-09-17  
   last obs. used      2014-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49955  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:59:54  

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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