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249207 (2008 DW48)
Classification: Main-belt Asteroid          SPK-ID: 2249207
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980253136842612 5.6798e-08  
a 2.780538769897023 4.6188e-08 au
q 2.229921707776916 1.6943e-07 au
i 13.95717443713885 6.3013e-06 deg
node 39.07817845251254 2.2714e-05 deg
peri 177.9461665041125 2.8291e-05 deg
M 183.9413215078361 2.5076e-05 deg
tp 2459828.722064407434
(2022-Sep-06.22206441)
0.00013553 TDB
period 1693.525963844757
4.64
4.2197e-05
1.155e-07
d
yr
n .2125742431386784 5.2967e-09 deg/d
Q 3.331155832017131 5.5334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6562 days (17.97 yr)  
   first obs. used      2001-11-12  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59598  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:31  

Additional Information
 Earth MOID = 1.22279 au 
 Jupiter MOID = 1.63981 au 
 T_jup = 3.262 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457291.5 (2015-Sep-26.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980001663668133 5.6825e-08  
q 2.23018785643241 1.6955e-07 au
tp 2458136.505094583908
(2018-Jan-18.00509458)
0.00010113 TDB
node 39.07936691107194 2.271e-05 deg
peri 178.1498197321505 2.8322e-05 deg
i 13.95870983281122 6.3033e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6562 days (17.97 yr)  
   first obs. used      2001-11-12  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59598  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:31  

Additional Information
 Jupiter MOID = 1.63981 au 
 T_jup = 3.262 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.229104438342556E-15 -9.410725115530024E-15 -2.234278671048434E-12 -1.377562481170487E-15 -3.783928602344646E-13 -2.238959883854036E-16
q -9.410725115530024E-15 2.874755830801218E-14 9.030704085924303E-12 -4.793719695241717E-15 1.437137776278514E-12 8.101799067693023E-15
tp -2.234278671048434E-12 9.030704085924303E-12 1.022670926526127E-8 -3.608716118728287E-11 1.717411078432734E-9 1.870861089061605E-11
node -1.377562481170487E-15 -4.793719695241717E-15 -3.608716118728287E-11 5.157394572223607E-10 -5.064438431444872E-10 -4.72136576087643E-11
peri -3.783928602344646E-13 1.437137776278514E-12 1.717411078432734E-9 -5.064438431444872E-10 8.021446820550676E-10 4.858540488398207E-11
i -2.238959883854036E-16 8.101799067693023E-15 1.870861089061605E-11 -4.72136576087643E-11 4.858540488398207E-11 3.973119412348407E-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 15.9   n/a MPO494359  
diameter diameter 4.303 km 1.420 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249207 (2008 DW48)          Discovered 2008-Feb-29 by CSS at Catalina
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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