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JPL Small-Body Database Browser
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48840 (1998 BR4)
Classification: Main-belt Asteroid          SPK-ID: 2048840
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2255753377094755 4.8726e-08  
a 3.193624000806951 2.0301e-08 au
q 2.473221188307837 1.6519e-07 au
i 3.757160874957594 3.8715e-06 deg
node 265.1671471191377 9.8166e-05 deg
peri 143.8339558461786 9.9e-05 deg
M 303.8453016124009 1.2408e-05 deg
tp 2458925.667925425321
(2020-Mar-17.16792543)
7.3166e-05 TDB
period 2084.606569251322
5.71
1.9877e-05
5.442e-08
d
yr
n .1726944572228286 1.6466e-09 deg/d
Q 3.914026813306066 2.488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1004  
   data-arc span      8456 days (23.15 yr)  
   first obs. used      1996-10-04  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50424  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:15:16  

Additional Information
 Earth MOID = 1.48439 au 
 Jupiter MOID = 1.49067 au 
 T_jup = 3.152 
[ 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 14.1   n/a MPO502481  
diameter diameter 10.540 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48840 (1998 BR4)          Discovered 1998-Jan-17 by ODAS at Caussols
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BR4 = 1996 TN48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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