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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809762453413548 4.4955e-08  
a 2.489793381329777 7.6961e-09 au
q 2.039199923500958 1.1272e-07 au
i 4.695598967016326 4.254e-06 deg
node 351.8142921509234 5.1967e-05 deg
peri 28.98101744182333 5.326e-05 deg
M 281.0521964227777 1.4667e-05 deg
tp 2459315.188549181334
(2021-Apr-10.68854918)
5.9361e-05 TDB
period 1434.971874733264
3.93
6.6534e-06
1.822e-08
d
yr
n .2508759971807236 1.1632e-09 deg/d
Q 2.940386839158597 9.0889e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2314  
   data-arc span      33743 days (92.38 yr)  
   first obs. used      1928-01-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:30:40  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2045-Dec-29 15:32 < 00:01 Hebe 0.0486473184412297 0.0486451262435933 0.0486495106695184 5.61711389728115 5.61711387453094 2468344.147069051 0.431192847019556 125.750829325731 22.5778432358474 -30.1935807454253 169591.73679972 T 26 CATAB v2.0f-lin.ifort 2020-Jun-23 15:30:51 2020-Jun-23 15:30

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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