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JPL Small-Body Database Browser
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521 Brixia (A904 AE)
Classification: Main-belt Asteroid          SPK-ID: 2000521
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2796272133413941 2.9063e-08  
a 2.744848630825996 6.8691e-09 au
q 1.977314257144182 7.8399e-08 au
i 10.59382719207189 3.9744e-06 deg
node 89.64884006795883 1.4649e-05 deg
peri 315.9180195896837 1.619e-05 deg
M 253.1310941582477 8.6954e-06 deg
tp 2459493.588516521965
(2021-Oct-06.08851652)		 4.1567e-05 TDB
period 1661.024453742988
4.55		 6.2352e-06
1.707e-08		 d
yr
n .2167337146595092 8.1357e-10 deg/d
Q 3.51238300450781 8.7899e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2526  
   data-arc span      42241 days (115.65 yr)  
   first obs. used      1904-01-10  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43815  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:29:39  

Additional Information
 Earth MOID = 1.00281 au 
 Jupiter MOID = 1.92977 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454579.5 (2008-Apr-23.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2817733691366429 2.932e-08  
q 1.968572802699466 7.9317e-08 au
tp 2454524.190619724545
(2008-Feb-27.69061972)		 3.026e-05 TDB
node 89.70054326069095 1.4673e-05 deg
peri 316.1973014066103 1.616e-05 deg
i 10.59333174896061 3.9729e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2526  
   data-arc span      42241 days (115.65 yr)  
   first obs. used      1904-01-10  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43815  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:29:39  

Additional Information
 Jupiter MOID = 1.92977 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.596809977559109E-16 -2.321259743535303E-15 4.65082740446952E-13 -8.248379866664472E-16 9.659882067679669E-14 -1.865120828862846E-15
q -2.321259743535303E-15 6.291122260019524E-15 -1.223109845159964E-12 3.113718755468016E-15 -2.562009708301105E-13 5.324330056943163E-15
tp 4.65082740446952E-13 -1.223109845159964E-12 9.156442664505028E-10 -3.700863329310917E-12 2.116869946703677E-10 -2.405598636294638E-12
node -8.248379866664472E-16 3.113718755468016E-15 -3.700863329310917E-12 2.152897533382915E-10 -2.116832207433294E-10 5.085906479841102E-12
peri 9.659882067679669E-14 -2.562009708301105E-13 2.116869946703677E-10 -2.116832207433294E-10 2.611371748072741E-10 -5.386819249928103E-12
i -1.865120828862846E-15 5.324330056943163E-15 -2.405598636294638E-12 5.085906479841102E-12 -5.386819249928103E-12 1.57840750555498E-11

[ 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 8.5   n/a MPO492755 IRAS observations used: 36
magnitude slope G -0.06   n/a PDS3 (MPC 17259) Fit
diameter diameter 107.227 km 0.494 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 28.479 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Wang, X.-b.; Gu, S.-h.; Li, X.-j. (2010) Earth, Moon, and Planets 106, 97-104.]
[Pilcher, F. (2015) Minor Planet Bull. 42, 280-281.]
geometric albedo albedo 0.073   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.712   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.37, mean=16.47, max.=24.99) deg.
U-B UB 0.341   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.37, mean=14.34, max.=17.58) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

521 Brixia (A904 AE)          Discovered 1904-Jan-10 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A904 AE = 1948 QU 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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