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1381 Danubia (1930 QJ)
Classification: Main-belt Asteroid          SPK-ID: 2001381
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809762911050127 5.9904e-08  
a 2.48979338559151 8.5969e-09 au
q 2.039199813049366 1.477e-07 au
i 4.695601671371293 4.6488e-06 deg
node 351.8143096959689 5.3362e-05 deg
peri 28.98100506430732 5.4875e-05 deg
M 281.0521861708685 1.7273e-05 deg
tp 2459315.188590853752
(2021-Apr-10.68859085)
6.9995e-05 TDB
period 1434.971878417586
3.93
7.4321e-06
2.035e-08
d
yr
n .250875996536594 1.2994e-09 deg/d
Q 2.940386958133654 1.0153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2236  
   data-arc span      33693 days (92.25 yr)  
   first obs. used      1928-01-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46913  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:23:48  

Additional Information
 Earth MOID = 1.04308 au 
 Jupiter MOID = 2.53184 au 
 T_jup = 3.446 
[ 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 12.3   n/a MPO473782  
diameter diameter 19.825 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.069   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.660   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=13.50 deg.
U-B UB 0.340   0.060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=13.50 deg.

1381 Danubia (1930 QJ)          Discovered 1930-Aug-20 by Skvortsov, E. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1930 QJ = 1928 BE = 1932 CG1 = 1936 DC = 1969 OV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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