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293 Brasilia (A890 KA)
Classification: Main-belt Asteroid          SPK-ID: 2000293
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057323309437048 1.593e-08  
a 2.859925424966995 1.0315e-08 au
q 2.557538843460069 4.4175e-08 au
i 15.58259748849565 1.1256e-06 deg
node 61.29895946132842 1.3683e-06 deg
peri 86.81520478549103 1.1026e-05 deg
M 73.93353457345263 9.7314e-06 deg
tp 2458837.698178933406
(2019-Dec-20.19817893)
4.7384e-05 TDB
period 1766.56853128285
4.84
9.5571e-06
2.617e-08
d
yr
n .2037849048168964 1.1025e-09 deg/d
Q 3.162312006473921 1.1405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2861  
   data-arc span      40859 days (111.87 yr)  
   first obs. used      1909-04-20  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37997  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:39:33  

Additional Information
 Earth MOID = 1.62702 au 
 Jupiter MOID = 2.02031 au 
 T_jup = 3.240 
[ show covariance matrix ]

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 10.24   n/a E2021B10 IRAS observations used: 31
diameter diameter 57.486 km 1.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.173 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Oey, J. (2006) Minor Planet Bull. 33, 96-99.]
[Stephens, R.D. (2006) Minor Planet Bull. 33, 100-101.]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Pilcher, F. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html]
[Pilcher, F. (2019) Minor Planet Bull. 46, 130-131.]
geometric albedo albedo 0.056   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.721   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=9.47, mean=10.28, max.=10.83) deg.
U-B UB 0.352   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=9.47, mean=10.28, max.=10.83) deg.
Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

293 Brasilia (A890 KA)          Discovered 1890-May-20 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A890 KA = A909 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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