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1071 Brita (A924 ER)
Classification: Main-belt Asteroid          SPK-ID: 2001071
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1101292007534544 3.0727e-08  
a 2.799831951206273 9.5665e-09 au
q 2.491488696175942 8.9148e-08 au
i 5.361365009003345 3.9382e-06 deg
node 52.48536716908968 4.1652e-05 deg
peri 29.1507490962376 4.6368e-05 deg
M 310.2912102841146 2.0752e-05 deg
tp 2459436.780055052753
(2021-Aug-10.28005505)
9.8819e-05 TDB
period 1711.182676246257
4.68
8.7702e-06
2.401e-08
d
yr
n .2103808114687764 1.0782e-09 deg/d
Q 3.108175206236605 1.062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2962  
   data-arc span      40492 days (110.86 yr)  
   first obs. used      1910-03-09  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:52:17  

Additional Information
 Earth MOID = 1.50841 au 
 Jupiter MOID = 2.11429 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456540.5 (2013-Sep-05.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099974157786035 3.0784e-08  
q 2.492593581028786 8.9199e-08 au
tp 2456000.005832286224
(2012-Mar-13.50583229)
9.728e-05 TDB
node 52.58905888253091 4.1504e-05 deg
peri 26.87474465960154 4.6318e-05 deg
i 5.372581804054906 3.9478e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2962  
   data-arc span      40492 days (110.86 yr)  
   first obs. used      1910-03-09  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:52:17  

Additional Information
 Jupiter MOID = 2.11429 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.476770923811119E-16 -2.734708853511741E-15 -6.133985464681756E-13 1.987313073413475E-15 -1.188204585870207E-13 -2.84112564246828E-16
q -2.734708853511741E-15 7.956423729069356E-15 1.753513762450161E-12 -6.382515687714337E-15 3.435271380521885E-13 9.060112187115731E-16
tp -6.133985464681756E-13 1.753513762450161E-12 9.463401113943422E-9 -2.851807460127361E-12 2.019599330534639E-9 1.463798314235937E-12
node 1.987313073413475E-15 -6.382515687714337E-15 -2.851807460127361E-12 1.722599524526568E-9 -1.715286489244984E-9 -5.695028134442229E-11
peri -1.188204585870207E-13 3.435271380521885E-13 2.019599330534639E-9 -1.715286489244984E-9 2.145396575507978E-9 5.69996831106134E-11
i -2.84112564246828E-16 9.060112187115731E-16 1.463798314235937E-12 -5.695028134442229E-11 5.69996831106134E-11 1.55850907822315E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.4   n/a MPO347523  
diameter diameter 60.862 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.8169 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Angeli, C.A.; Guimaraes, T.A.; Lazzaro, D.; Duffard, R.; et al. (2001) Astron. J. 121, 2245-2252.]
[Benishek, V.; Protitch-Benishek, V. (2009) Minor Planet Bull. 36, 35-37.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.036   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xk   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)

1071 Brita (A924 ER)          Discovered 1924-Mar-03 by Albitzkij, V. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A924 ER = 1927 YB = 1947 BE = 1948 HB = 1948 JG = 1952 FJ = A910 EB = A917 SP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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