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10128 Bro (1993 FT31)
Classification: Main-belt Asteroid          SPK-ID: 2010128
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2302181163700746 3.6407e-08  
a 2.268174113726762 4.9287e-09 au
q 1.745999341665223 8.2904e-08 au
i 5.60206045125242 3.8069e-06 deg
node 148.5447339442514 3.1874e-05 deg
peri 212.9727181472157 3.2395e-05 deg
M 178.8901873296989 5.7449e-06 deg
tp 2458380.492376748378
(2018-Sep-18.99237675)
1.9605e-05 TDB
period 1247.708148235184
3.42
4.0669e-06
1.113e-08
d
yr
n .2885290125813482 9.4046e-10 deg/d
Q 2.7903488857883 6.0634e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2882  
   data-arc span      24334 days (66.62 yr)  
   first obs. used      1953-09-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:17:37  

Additional Information
 Earth MOID = .745785 au 
 Jupiter MOID = 2.66518 au 
 T_jup = 3.573 
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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 14.2   n/a MPO458927  
diameter diameter 3.488 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10128 Bro           Discovered 1993 Mar. 19 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets.
In Bro, a small parish on Gotland, there is among other things an old cairn from the bronze age. More than 40 meters in diameter, it is said to be the burial site of chief Baldur.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

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Alternate Designations
 1993 FT31 = 1953 RL = 1977 TD6 = 1994 PG16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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