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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2796272135037835 2.832e-08  
a 2.744848630821072 6.6542e-09 au
q 1.9773142566949 7.6599e-08 au
i 10.59382689636362 3.9657e-06 deg
node 89.6488423466586 1.4254e-05 deg
peri 315.9180173671362 1.5845e-05 deg
M 253.1310941269716 8.6001e-06 deg
tp 2459493.588516664945
(2021-Oct-06.08851666)
4.1074e-05 TDB
period 1661.024453738519
4.55
6.0401e-06
1.654e-08
d
yr
n .2167337146600924 7.8812e-10 deg/d
Q 3.512383004947245 8.5149e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      42674 days (116.84 yr)  
   first obs. used      1904-01-10  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:14  

Additional Information
 Earth MOID = 1.00281 au 
 Jupiter MOID = 1.92977 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454790.5 (2008-Nov-20.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2818864940667571 2.8601e-08  
q 1.968440642878243 7.763e-08 au
tp 2454524.190439047706
(2008-Feb-27.69043905)
3.021e-05 TDB
node 89.6994136237991 1.4278e-05 deg
peri 316.1921358626265 1.5813e-05 deg
i 10.59287286882208 3.9641e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      42674 days (116.84 yr)  
   first obs. used      1904-01-10  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:14  

Additional Information
 Jupiter MOID = 1.92977 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.179941106722786E-16 -2.216177146026913E-15 4.558054288448697E-13 -1.145133761748289E-15 9.894149059726957E-14 -1.74954354143201E-15
q -2.216177146026913E-15 6.02645691454986E-15 -1.199508317077348E-12 3.887057223326967E-15 -2.621003879666354E-13 5.012729754984768E-15
tp 4.558054288448697E-13 -1.199508317077348E-12 9.126717098932582E-10 -3.923654884298464E-12 2.120735494403136E-10 -2.310455682294125E-12
node -1.145133761748289E-15 3.887057223326967E-15 -3.923654884298464E-12 2.038745889722669E-10 -2.005364116133482E-10 5.470200587955729E-12
peri 9.894149059726957E-14 -2.621003879666354E-13 2.120735494403136E-10 -2.005364116133482E-10 2.500556598467179E-10 -5.748264812330317E-12
i -1.74954354143201E-15 5.012729754984768E-15 -2.310455682294125E-12 5.470200587955729E-12 -5.748264812330317E-12 1.571370086550983E-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. 2020-October); 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

[ 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
1983-Aug-30 06:19 < 00:01 Jupiter 1.96553070215326 1.96553030853895 1.96553109576903 2.52762268611731 2.35095720632257 2445576.763280401 0.307253999821534 127.600405409089 7.01369558383214 82.4792142825912 2483955.23892853 T 88 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:21 2020-Dec-18 01:54
2042-Jun-19 03:16 < 00:01 Jupiter 1.92578410303828 1.92578378564604 1.92578442043095 2.20334737367153 1.99375890385455 2467054.635977014 0.377348770646145 142.506977654365 16.2913313413269 82.5349538107656 2607311.76146774 T 88 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:21 2020-Dec-18 01:54
2101-Apr-07 23:38 00:01 Jupiter 1.97078956550091 1.97078909242136 1.97079003858135 1.92319801096007 1.68496699294767 2488531.484472707 1.01560273270623 205.629732042529 33.3410501906436 79.8943271779143 2802205.01107119 T 88 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:21 2020-Dec-18 01:54
2138-Mar-08 17:12 00:01 Jupiter 1.99313532266601 1.99313480633845 1.99313583899856 2.72253752975961 2.56169295660321 2502015.216387736 1.39239815982746 193.526629680756 8.96660829424011 84.6353126603916 2515673.23112496 T 88 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:21 2020-Dec-18 01:54
2196-Dec-27 08:29 00:02 Jupiter 1.9199108964208 1.91991058121742 1.9199112116269 2.42199022262351 2.23241585941513 2523493.853158579 2.00180708481424 251.150622685814 21.0409717297101 89.9654209659956 2255075.8721441 T 88 CATAB v2.0f-lin.ifort 2020-Dec-18 01:54:21 2020-Dec-18 01:54

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