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49731 (1999 VR80)
Classification: Main-belt Asteroid          SPK-ID: 2049731
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639503442575043 4.1857e-08  
a 2.381444511349027 9.4352e-09 au
q 1.99100586388321 1.0008e-07 au
i 5.09899480302657 5.5125e-06 deg
node 177.8601666952724 4.2085e-05 deg
peri 320.0713416561308 4.4829e-05 deg
M 146.1482364875924 1.4295e-05 deg
tp 2458455.558095197255
(2018-Dec-03.05809520)
5.3105e-05 TDB
period 1342.329476179779
3.68
7.9774e-06
2.184e-08
d
yr
n .2681904900312156 1.5938e-09 deg/d
Q 2.771883158814844 1.0982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48888  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:14  

Additional Information
 Earth MOID = 1.0073 au 
 Jupiter MOID = 2.2622 au 
 T_jup = 3.514 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456725.5 (2014-Mar-09.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1642979395567344 4.1652e-08  
q 1.988467732378478 9.946e-08 au
tp 2457113.970957951377
(2015-Apr-01.47095795)
5.3035e-05 TDB
node 177.9679570723464 4.2117e-05 deg
peri 319.7934779304022 4.4857e-05 deg
i 5.097793986746588 5.5125e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48888  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:14  

Additional Information
 Jupiter MOID = 2.2622 au 
 T_jup = 3.514 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.734870606343407E-15 -4.130037868089224E-15 8.895498649777277E-13 -5.258736019586653E-15 2.788475575874937E-13 -3.038411088654139E-15
q -4.130037868089224E-15 9.892335439382687E-15 -2.156122370000791E-12 1.20742671145682E-14 -6.799818548927095E-13 7.278367284003159E-15
tp 8.895498649777277E-13 -2.156122370000791E-12 2.812691991170043E-9 -4.089656992752494E-12 8.267207643310772E-10 -1.554747581742212E-12
node -5.258736019586653E-15 1.20742671145682E-14 -4.089656992752494E-12 1.773880870147323E-9 -1.767378411772124E-9 1.951615486167415E-11
peri 2.788475575874937E-13 -6.799818548927095E-13 8.267207643310772E-10 -1.767378411772124E-9 2.012174376335509E-9 -1.987566585305273E-11
i -3.038411088654139E-15 7.278367284003159E-15 -1.554747581742212E-12 1.951615486167415E-11 -1.987566585305273E-11 3.038800202875582E-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 15.2   n/a MPO436131  
diameter diameter 5.086 km 0.506 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.068   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49731 (1999 VR80)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VR80 = 2001 KO15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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