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1643 Brown (1951 RQ)
Classification: Main-belt Asteroid          SPK-ID: 2001643
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022598770500938 4.5019e-08  
a 2.489042795230597 6.3387e-09 au
q 1.985609305494835 1.1023e-07 au
i 3.514691929707993 3.0972e-06 deg
node 287.9149157273334 6.9198e-05 deg
peri 90.30038213301253 6.9646e-05 deg
M 57.93348909029913 7.2451e-06 deg
tp 2458369.679617349394
(2018-Sep-08.17961735)
2.8751e-05 TDB
period 1434.323032481268
3.93
5.4791e-06
1.5e-08
d
yr
n .2509894855256056 9.5877e-10 deg/d
Q 2.992476284966359 7.6208e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2856  
   data-arc span      31717 days (86.84 yr)  
   first obs. used      1933-01-25  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45005  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:24:52  

Additional Information
 Earth MOID = .990564 au 
 Jupiter MOID = 2.48837 au 
 T_jup = 3.443 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO416723  
diameter diameter 9.505 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.932 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Carbognani, A. (2011) Minor Planet Bull. 38, 57-63.]
[Durkee, R.I. (2011) Minor Planet Bull. 38, 39-40.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.179   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1643 Brown (1951 RQ)          Discovered 1951-Sep-04 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1951 RQ = 1933 BG = 1951 SR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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