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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .13456083705184 3.9668e-08  
a 2.470266012607567 1.4132e-08 AU
q 2.137864950210381 9.9651e-08 AU
i 3.053470147458748 6.7061e-06 deg
node 81.82896829863792 0.00010576 deg
peri 46.31416334028697 0.00011093 deg
M 144.1306573576427 3.2754e-05 deg
tp 2456432.735965651223
(2013-May-20.23596565)
0.00012713 JED
period 1418.123361904735
3.88
1.2169e-05
3.332e-08
d
yr
n .2538566176051641 2.1784e-09 deg/d
Q 2.802667075004752 1.6034e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1197  
   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      .4976  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:45:29  

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)
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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