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101581 (1999 BY7)
Classification: Main-belt Asteroid          SPK-ID: 2101581
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .224285913645128 6.0209e-08  
a 3.195645439743075 3.4324e-08 au
q 2.478907182604412 1.8582e-07 au
i 17.42466651654765 2.8427e-06 deg
node 295.652097036892 2.0567e-05 deg
peri 98.47979259742438 3.852e-05 deg
M 5.628597163152314 2.0618e-05 deg
tp 2459167.876242864407
(2020-Nov-14.37624286)
0.00011991 TDB
period 2086.586093902652
5.71
3.3618e-05
9.204e-08
d
yr
n .172530623611448 2.7797e-09 deg/d
Q 3.912383696881737 4.2023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      8145 days (22.30 yr)  
   first obs. used      1998-11-18  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4115  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:29  

Additional Information
 Earth MOID = 1.5574 au 
 Jupiter MOID = 1.86121 au 
 T_jup = 3.086 
[ 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 14.23   n/a E2021B55  
diameter diameter 5.768 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.146   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101581 (1999 BY7)          Discovered 1999-Jan-21 by Korlevic, K. at Visnjan
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 BY7 = 2002 LQ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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