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8107 (1995 BR4)
Classification: Main-belt Asteroid          SPK-ID: 2008107
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09430983890821731 1.3107e-08  
a 2.239087399922793 5.8017e-09 au
q 2.027919427934655 3.0469e-08 au
i 7.143914036516049 4.1716e-07 deg
node 146.8186868039328 5.9542e-06 deg
peri 341.4754711694574 9.5381e-06 deg
M 259.2300262529761 7.9434e-06 deg
tp 2459543.057626298131
(2021-Nov-24.55762630)
2.7856e-05 TDB
period 1223.784634269286
3.35
4.7564e-06
1.302e-08
d
yr
n .2941694068703138 1.1433e-09 deg/d
Q 2.45025537191093 6.3488e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2636  
   data-arc span      17808 days (48.76 yr)  
   first obs. used      1972-05-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:19:57  

Additional Information
 Earth MOID = 1.04373 au 
 Jupiter MOID = 2.57674 au 
 T_jup = 3.620 
[ 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 13.91   n/a E2021B10  
diameter diameter 4.569 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.9785 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J. (2016) Minor Planet Bull. 43, 45-51.]
geometric albedo albedo 0.307   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8107 (1995 BR4)          Discovered 1995-Jan-31 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1995 BR4 = 1972 JT = 1986 NQ = 1990 SL3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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