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JPL Small-Body Database Browser
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49767 (1999 WK2)
Classification: Main-belt Asteroid          SPK-ID: 2049767
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1036654687933716 3.903e-08  
a 2.194976542122806 6.8391e-09 au
q 1.967433269893192 8.6532e-08 au
i 7.861096902764955 3.4531e-06 deg
node 51.94800965392616 2.7325e-05 deg
peri 161.1237211110642 3.33e-05 deg
M 308.9809545911523 2.0463e-05 deg
tp 2459168.834479123422
(2020-Nov-15.33447912)
6.7709e-05 TDB
period 1187.79981081188
3.25
5.5514e-06
1.52e-08
d
yr
n .3030813750963088 1.4165e-09 deg/d
Q 2.42251981435242 7.5481e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      7865 days (21.53 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:46:39  

Additional Information
 Earth MOID = .961979 au 
 Jupiter MOID = 2.5437 au 
 T_jup = 3.650 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456787.5 (2014-May-10.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1036393827417914 3.9024e-08  
q 1.967311853382746 8.6491e-08 au
tp 2456793.419502025342
(2014-May-15.91950203)
6.5964e-05 TDB
node 51.96863132367415 2.7329e-05 deg
peri 161.1808618973364 3.333e-05 deg
i 7.861097335277945 3.4532e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      7865 days (21.53 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:46:39  

Additional Information
 Jupiter MOID = 2.5437 au 
 T_jup = 3.650 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.52289868327715E-15 -3.366913099623475E-15 -1.350011769541824E-12 9.518162771349936E-15 -3.677696793564118E-13 -2.467034386047683E-15
q -3.366913099623475E-15 7.480663025680613E-15 2.996995042692132E-12 -2.090888055138778E-14 8.167899087560869E-13 5.616127495706553E-15
tp -1.350011769541824E-12 2.996995042692132E-12 4.351301969891973E-9 -2.068228754817481E-11 1.271398648894403E-9 6.422356839663809E-12
node 9.518162771349936E-15 -2.090888055138778E-14 -2.068228754817481E-11 7.468477248515828E-10 -7.455861500193276E-10 -2.8513852761886E-11
peri -3.677696793564118E-13 8.167899087560869E-13 1.271398648894403E-9 -7.455861500193276E-10 1.110918663838414E-9 3.009638378793766E-11
i -2.467034386047683E-15 5.616127495706553E-15 6.422356839663809E-12 -2.8513852761886E-11 3.009638378793766E-11 1.192430455402035E-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 14.7   n/a MPO452847  
diameter diameter 3.187 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49767 (1999 WK2)          Discovered 1999-Nov-26 by Korlevic, K. at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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