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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1818794149118737 6.6166e-08  
a 2.487666925697501 8.8518e-09 au
q 2.03521152075602 1.6248e-07 au
i 4.696958676204167 4.7973e-06 deg
node 351.8827605071495 5.4896e-05 deg
peri 29.10880295877441 5.6461e-05 deg
M 180.4666575780525 1.7866e-05 deg
tp 2459315.209229772734
(2021-Apr-10.70922977)
7.3798e-05 TDB
period 1433.133919567302
3.92
7.6493e-06
2.094e-08
d
yr
n .251197738804963 1.3408e-09 deg/d
Q 2.940122330638982 1.0462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2084  
   data-arc span      33340 days (91.28 yr)  
   first obs. used      1928-01-29  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47635  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:22:29  

Additional Information
 Earth MOID = 1.03839 au 
 Jupiter MOID = 2.52902 au 
 T_jup = 3.447 
[ 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 12.29   n/a PDS3 (MPC 17262)  
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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