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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026752484442154 2.0158e-08  
a 2.487989246197974 5.5687e-09 au
q 1.983735407598263 4.8932e-08 au
i 3.514916278285706 5.8809e-07 deg
node 287.9147548028135 6.9434e-06 deg
peri 90.21719265878433 7.8107e-06 deg
M 208.6559312260465 2.8464e-06 deg
tp 2459803.106871900507
(2022-Aug-11.60687190)
1.291e-05 TDB
period 1433.41245971258
3.92
4.8125e-06
1.318e-08
d
yr
n .2511489261591777 8.432e-10 deg/d
Q 2.992243084797684 6.6974e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3293  
   data-arc span      32174 days (88.09 yr)  
   first obs. used      1933-01-25  
   last obs. used      2021-02-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:44:16  

Additional Information
 Earth MOID = .988082 au 
 Jupiter MOID = 2.49282 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 12.52   n/a E2021B10  
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. 2020-October); 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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