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521 Brixia (1904 NB)
Classification: Main-belt Asteroid          SPK-ID: 2000521
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .282585961024126 3.0942e-08  
a 2.739394288968747 6.844e-09 au
q 1.965279921196512 8.4289e-08 au
i 10.59725718876532 4.7265e-06 deg
node 89.66841829711693 1.4681e-05 deg
peri 316.0374331813833 1.6547e-05 deg
M 265.3893746922932 7.7338e-06 deg
tp 2457835.728832248054
(2017-Mar-23.22883225)
3.6395e-05 JED
period 1656.075933328986
4.53
6.2062e-06
1.699e-08
d
yr
n .2173813366615024 8.1464e-10 deg/d
Q 3.513508656740984 8.778e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1463  
   data-arc span      40813 days (111.74 yr)  
   first obs. used      1904-01-10  
   last obs. used      2015-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54448  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 15:49:43  

Additional Information
 Earth MOID = .989697 au 
 Jupiter MOID = 1.93123 au 
 T_jup = 3.268 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.31 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 36
magnitude slope G -0.06   n/a PDS3 (MPC 17259) Fit
diameter diameter 115.65 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 36
rotation period rot_per 28.479 h n/a LCDB (Rev. 2015-December); 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 Bul. 42, 280-281.]
geometric albedo albedo 0.0626   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 36
B-V BV .712 mag .015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=8.37, mean=16.47, max.=24.99) deg.
U-B UB .341 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 (1904 NB)          Discovered 1904-Jan-10 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1904 NB = 1948 QU 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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