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4400 Bagryana (1985 QH4)
Classification: Main-belt Asteroid          SPK-ID: 2004400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391766103877713 1.0976e-08  
a 2.367608457043374 6.8883e-09 au
q 2.038092737266656 2.5325e-08 au
i 4.37759280170177 6.9204e-07 deg
node 352.1059789447422 1.7713e-05 deg
peri 27.17921657306195 1.9018e-05 deg
M 261.3080700235556 9.6792e-06 deg
tp 2459761.289552663317
(2022-Jun-30.78955266)
3.6312e-05 TDB
period 1330.648199808619
3.64
5.807e-06
1.59e-08
d
yr
n .2705448367583386 1.1807e-09 deg/d
Q 2.697124176820092 7.8469e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2493  
   data-arc span      24185 days (66.21 yr)  
   first obs. used      1955-05-23  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4516  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:32:39  

Additional Information
 Earth MOID = 1.0403 au 
 Jupiter MOID = 2.77431 au 
 T_jup = 3.530 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.86   n/a E2021B10  
diameter diameter 5.373 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4400 Bagryana (1985 QH4)          Discovered 1985-Aug-24 by Bulgarian Nat. Obs. at Rozhen
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 QH4 = 1956 RD = 1978 SZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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