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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058695949709894 3.6893e-08  
a 2.860253784964356 1.1038e-08 au
q 2.55743987523594 1.0688e-07 au
i 15.58215511784736 4.313e-06 deg
node 61.30044362004114 1.5479e-05 deg
peri 86.83278916588014 2.7081e-05 deg
M 33.15020303327624 2.0597e-05 deg
tp 2458837.799468294333
(2019-Dec-20.29946829)
0.00010118 TDB
period 1766.872780695945
4.84
1.0228e-05
2.8e-08
d
yr
n .2037498137575028 1.1794e-09 deg/d
Q 3.163067694692772 1.2207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      40658 days (111.32 yr)  
   first obs. used      1909-04-20  
   last obs. used      2020-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:13  

Additional Information
 Earth MOID = 1.62706 au 
 Jupiter MOID = 2.02078 au 
 T_jup = 3.239 
[ 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 10.2   n/a MPO502155 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. 2019-August); 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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