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JPL Small-Body Database Browser
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27765 Brockhaus (1991 RJ41)
Classification: Main-belt Asteroid          SPK-ID: 2027765
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1270714787861821 4.198e-08  
a 2.283130789843664 7.6852e-09 au
q 1.993009984115965 9.7398e-08 au
i 7.67212390853017 4.8099e-06 deg
node 12.67786974086544 2.9213e-05 deg
peri 9.574232676274343 3.4256e-05 deg
M 343.2102064917767 1.8062e-05 deg
tp 2458659.267534016833
(2019-Jun-24.76753402)
6.3333e-05 TDB
period 1260.069829667523
3.45
6.3622e-06
1.742e-08
d
yr
n .2856984522000564 1.4425e-09 deg/d
Q 2.573251595571362 8.6618e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1291  
   data-arc span      10303 days (28.21 yr)  
   first obs. used      1991-09-10  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52031  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:07:38  

Additional Information
 Earth MOID = .995302 au 
 Jupiter MOID = 2.88652 au 
 T_jup = 3.581 
[ 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 14.8   n/a MPO410296  
diameter diameter 2.614 km 0.581 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.374   0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27765 Brockhaus           Discovered 1991 Sept. 10 by F. Börngen at Tautenburg.
In 1805, German publisher Friedrich Arnold Brockhaus (1772-1823) founded the F. A. Brockhaus publishing house. With its headquarters in Leipzig since 1817, it was originally best known for its encyclopedias, which served as models for other reference books.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1991 RJ41 = 1991 TM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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