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JPL Small-Body Database Browser
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82250 (2001 KW2)
Classification: Main-belt Asteroid          SPK-ID: 2082250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2433468325804711 4.3591e-08  
a 2.217295338405025 1.133e-08 au
q 1.677723540908719 9.2787e-08 au
i 6.666750266955861 5.3897e-06 deg
node 80.20027775699462 4.3862e-05 deg
peri 220.4054900597723 4.5886e-05 deg
M 229.3256501383718 1.5041e-05 deg
tp 2459438.245399022079
(2021-Aug-11.74539902)
5.2058e-05 TDB
period 1205.962331665088
3.30
9.2434e-06
2.531e-08
d
yr
n .2985167865922838 2.2881e-09 deg/d
Q 2.756867135901332 1.4087e-08 au
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      8813 days (24.13 yr)  
   first obs. used      1995-11-19  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 12:52:35  

Additional Information
 Earth MOID = .668723 au 
 Jupiter MOID = 2.48083 au 
 T_jup = 3.604 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457259.5 (2015-Aug-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2438231295219161 4.3559e-08  
q 1.676453082134437 9.2771e-08 au
tp 2457026.386174083732
(2015-Jan-03.88617408)
4.5109e-05 TDB
node 80.23642413893512 4.3878e-05 deg
peri 220.4010932912981 4.5894e-05 deg
i 6.666236855226483 5.3888e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      8813 days (24.13 yr)  
   first obs. used      1995-11-19  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 12:52:35  

Additional Information
 Jupiter MOID = 2.48083 au 
 T_jup = 3.604 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.897418618716275E-15 -4.027981747735266E-15 1.630687407192898E-13 7.793872778954443E-15 -3.186305479296864E-14 -1.180051723144597E-15
q -4.027981747735266E-15 8.60646280719565E-15 -2.872500451876357E-13 -1.625673601898412E-14 8.451018972062129E-14 1.957884647609671E-15
tp 1.630687407192898E-13 -2.872500451876357E-13 2.034829561481135E-9 -1.713525608549989E-11 6.248612549490276E-10 -5.871039428875927E-12
node 7.793872778954443E-15 -1.625673601898412E-14 -1.713525608549989E-11 1.925245348112835E-9 -1.916898346843138E-9 -8.14563838934367E-11
peri -3.186305479296864E-14 8.451018972062129E-14 6.248612549490276E-10 -1.916898346843138E-9 2.106225790399432E-9 7.925413309912052E-11
i -1.180051723144597E-15 1.957884647609671E-15 -5.871039428875927E-12 -8.14563838934367E-11 7.925413309912052E-11 2.903901483780435E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO453247  
diameter diameter 2.752 km 0.777 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

82250 (2001 KW2)          Discovered 2001-May-21 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 2001 KW2 = 1995 WE44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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