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101590 (1999 BU20)
Classification: Main-belt Asteroid          SPK-ID: 2101590
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08937555037095982 4.9661e-08  
a 2.481905293628233 1.1614e-08 au
q 2.260083642041611 1.1921e-07 au
i 5.55549889427209 5.4978e-06 deg
node 326.0536725652391 3.7018e-05 deg
peri 158.1301356300137 4.8867e-05 deg
M 158.0217843378555 3.3165e-05 deg
tp 2458373.610933323067
(2018-Sep-12.11093332)
0.00012878 TDB
period 1428.157927398068
3.91
1.0024e-05
2.744e-08
d
yr
n .2520729627261019 1.7693e-09 deg/d
Q 2.703726945214855 1.2652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      975  
   data-arc span      7919 days (21.68 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:40  

Additional Information
 Earth MOID = 1.27644 au 
 Jupiter MOID = 2.33818 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456913.5 (2014-Sep-13.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09057246565807685 4.939e-08  
q 2.256021203543518 1.1894e-07 au
tp 2456946.147238232400
(2014-Oct-15.64723823)
0.00012106 TDB
node 326.1237546385236 3.7053e-05 deg
peri 157.7602874339953 4.8628e-05 deg
i 5.55418421854118 5.4957e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      975  
   data-arc span      7919 days (21.68 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:40  

Additional Information
 Jupiter MOID = 2.33818 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.439369875565198E-15 -5.855172077789637E-15 3.358050685302803E-12 7.832875086424761E-15 8.419873240051556E-13 1.624024136981523E-15
q -5.855172077789637E-15 1.414626451955409E-14 -7.622542289783212E-12 -1.901127295611798E-14 -1.907402812073823E-12 -3.628836565362061E-15
tp 3.358050685302803E-12 -7.622542289783212E-12 1.465542736255966E-8 5.719697985578747E-12 3.819836023741061E-9 6.110808518626764E-12
node 7.832875086424761E-15 -1.901127295611798E-14 5.719697985578747E-12 1.372907761067489E-9 -1.364606468921589E-9 3.256117452141782E-11
peri 8.419873240051556E-13 -1.907402812073823E-12 3.819836023741061E-9 -1.364606468921589E-9 2.364664484979281E-9 -3.082487190534184E-11
i 1.624024136981523E-15 -3.628836565362061E-15 6.110808518626764E-12 3.256117452141782E-11 -3.082487190534184E-11 3.020282905576606E-11

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 15.5   n/a MPO337993  

101590 (1999 BU20)          Discovered 1999-Jan-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 BU20 = 2001 RO84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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