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6628 Dondelia (1981 WA1)
Classification: Main-belt Asteroid          SPK-ID: 2006628
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07057385474858341 3.7454e-08  
a 2.905033478617548 1.5049e-08 au
q 2.700014067857821 1.1188e-07 au
i 2.93070881276211 4.1884e-06 deg
node 127.3562110604311 8.2312e-05 deg
peri 250.1245729956842 8.8463e-05 deg
M 314.7485549444124 3.4469e-05 deg
tp 2459227.829130674279
(2021-Jan-13.32913067)
0.00017382 TDB
period 1808.527593808526
4.95
1.4053e-05
3.848e-08
d
yr
n .1990569572908127 1.5468e-09 deg/d
Q 3.110052889377275 1.6111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1951  
   data-arc span      13785 days (37.74 yr)  
   first obs. used      1981-11-24  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49265  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:55:13  

Additional Information
 Earth MOID = 1.70307 au 
 Jupiter MOID = 2.25246 au 
 T_jup = 3.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO337310  
diameter diameter 8.418 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6628 Dondelia (1981 WA1)          Discovered 1981-Nov-24 by Bowell, E. at Anderson Mesa
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 WA1 = 1988 EO2 = 1990 OG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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