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20687 Saletore (1999 VQ60)
Classification: Main-belt Asteroid          SPK-ID: 2020687
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08838234355845168 3.092e-08  
a 2.736227749371706 1.3097e-08 au
q 2.494393528372567 8.8798e-08 au
i 9.891488897882509 4.4727e-06 deg
node 48.65090428988493 2.1952e-05 deg
peri 247.4956904440441 3.8055e-05 deg
M 289.6120264388392 3.2854e-05 deg
tp 2459323.738254423683
(2021-Apr-19.23825442)
0.00015126 TDB
period 1653.205309162855
4.53
1.187e-05
3.25e-08
d
yr
n .2177587974129454 1.5635e-09 deg/d
Q 2.978061970370845 1.4255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      14133 days (38.69 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:01:20  

Additional Information
 Earth MOID = 1.49873 au 
 Jupiter MOID = 2.17947 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457328.5 (2015-Nov-02.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08729155374666528 3.0922e-08  
q 2.497904126249209 8.8689e-08 au
tp 2457668.637379408728
(2016-Oct-07.13737941)
0.00015138 TDB
node 48.66603908873019 2.1949e-05 deg
peri 247.2121019330571 3.8353e-05 deg
i 9.891365886873414 4.4726e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      14133 days (38.69 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:01:20  

Additional Information
 Jupiter MOID = 2.17947 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.56192602841486E-16 -2.719379189580466E-15 3.001192756949539E-14 -6.131452872009214E-15 3.656309007569594E-14 1.86889903212307E-15
q -2.719379189580466E-15 7.865681853518908E-15 1.082243616558412E-13 1.725514720118363E-14 -6.980747400722961E-14 -4.84115463191176E-15
tp 3.001192756949539E-14 1.082243616558412E-13 2.291548312444716E-8 1.560426312801277E-11 4.775452596682872E-9 1.690721080033533E-12
node -6.131452872009214E-15 1.725514720118363E-14 1.560426312801277E-11 4.817560041350985E-10 -4.711966092168991E-10 -3.341819351995107E-11
peri 3.656309007569594E-14 -6.980747400722961E-14 4.775452596682872E-9 -4.711966092168991E-10 1.470957993583138E-9 3.334242586189025E-11
i 1.86889903212307E-15 -4.84115463191176E-15 1.690721080033533E-12 -3.341819351995107E-11 3.334242586189025E-11 2.000388190421511E-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 14.1   n/a MPO474037  
diameter diameter 3.771 km 0.750 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20687 Saletore           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yogesh Saletore (b. 1987) was awarded second place in the 2004 Intel International Science and Engineering Fair for his computer science project. He attends the Olympia High School, Olympia, Washington, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 1999 VQ60 = 1981 UR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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