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15717 (1990 BL1)
Classification: Main-belt Asteroid          SPK-ID: 2015717
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1593467940138688 1.6441e-08  
a 2.618742077843209 8.9962e-09 au
q 2.201453923389676 4.1776e-08 au
i 12.92342908566526 6.881e-07 deg
node 177.1211369887419 2.1377e-06 deg
peri 258.517050196192 7.4452e-06 deg
M 136.8345357231127 6.4521e-06 deg
tp 2458612.156799287015
(2019-May-08.65679929)
2.6827e-05 TDB
period 1547.880811941097
4.24
7.9762e-06
2.184e-08
d
yr
n .2325760466973858 1.1985e-09 deg/d
Q 3.036030232296742 1.043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      13768 days (37.69 yr)  
   first obs. used      1983-07-09  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:06:18  

Additional Information
 Earth MOID = 1.25734 au 
 Jupiter MOID = 2.35836 au 
 T_jup = 3.352 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457027.5 (2015-Jan-05.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577946048451929 1.6173e-08  
q 2.206359326253207 4.0928e-08 au
tp 2457065.050283420865
(2015-Feb-11.55028342)
2.6571e-05 TDB
node 177.1460709284928 2.1379e-06 deg
peri 258.9736129503576 7.5443e-06 deg
i 12.91710196797784 6.8806e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      13768 days (37.69 yr)  
   first obs. used      1983-07-09  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:06:18  

Additional Information
 Jupiter MOID = 2.35836 au 
 T_jup = 3.352 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.615652577279257E-16 -6.512821450644588E-16 -3.703644315139802E-13 3.160214106519827E-15 -1.106425666556818E-13 -1.945645862946162E-15
q -6.512821450644588E-16 1.675142074937003E-15 9.559937712753677E-13 -8.682799714742513E-15 2.863906058641025E-13 4.943089525850187E-15
tp -3.703644315139802E-13 9.559937712753677E-13 7.060202137480769E-10 9.28368498128321E-12 1.934848271655917E-10 5.551386979341472E-12
node 3.160214106519827E-15 -8.682799714742513E-15 9.28368498128321E-12 4.570756026639809E-12 -1.415713693895296E-12 1.504177882870677E-13
peri -1.106425666556818E-13 2.863906058641025E-13 1.934848271655917E-10 -1.415713693895296E-12 5.691630846561318E-11 1.326692203632991E-12
i -1.945645862946162E-15 4.943089525850187E-15 5.551386979341472E-12 1.504177882870677E-13 1.326692203632991E-12 4.73420879234037E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.50   n/a MPCxxxxx  
diameter diameter 7.012 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.172   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15717 (1990 BL1)          Discovered 1990-Jan-21 by Helin, E. F. at Palomar
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 BL1 = 1999 FW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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