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215237 (2001 DJ2)
Classification: Main-belt Asteroid          SPK-ID: 2215237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133219683253476 5.5153e-08  
a 2.702053806778431 1.8658e-08 au
q 2.34208705450556 1.4812e-07 au
i 7.073171930449065 5.3802e-06 deg
node 333.9966822238886 4.8996e-05 deg
peri 83.64255901812757 5.5131e-05 deg
M 247.8326332303891 2.2074e-05 deg
tp 2459705.979375361642
(2022-May-06.47937536)
0.00010012 TDB
period 1622.330811277385
4.44
1.6804e-05
4.601e-08
d
yr
n .2219029543774394 2.2984e-09 deg/d
Q 3.062020559051303 2.1144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7126 days (19.51 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:49:54  

Additional Information
 Earth MOID = 1.36606 au 
 Jupiter MOID = 2.29082 au 
 T_jup = 3.343 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457104.5 (2015-Mar-23.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354456177228425 5.4972e-08  
q 2.332647807292573 1.4755e-07 au
tp 2456468.676155953462
(2013-Jun-25.17615595)
9.9721e-05 TDB
node 334.0737372352045 4.9072e-05 deg
peri 84.08824432232167 5.4982e-05 deg
i 7.071576119353138 5.379e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7126 days (19.51 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:49:54  

Additional Information
 Jupiter MOID = 2.29082 au 
 T_jup = 3.343 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.021944605063148E-15 -8.061236180004057E-15 -1.085993839224407E-12 -3.212809032925983E-15 -2.831590276648034E-13 -9.539838226092053E-15
q -8.061236180004057E-15 2.177088655945032E-14 2.529471472967228E-12 1.202493354278026E-14 6.830082638397215E-13 2.622504524066509E-14
tp -1.085993839224407E-12 2.529471472967228E-12 9.944336805183831E-9 -7.592716010678825E-12 2.510678713877995E-9 2.270112682747623E-12
node -3.212809032925983E-15 1.202493354278026E-14 -7.592716010678825E-12 2.408071243730364E-9 -2.391081236958702E-9 3.440567208616659E-11
peri -2.831590276648034E-13 6.830082638397215E-13 2.510678713877995E-9 -2.391081236958702E-9 3.023050982011549E-9 -3.34674200489101E-11
i -9.539838226092053E-15 2.622504524066509E-14 2.270112682747623E-12 3.440567208616659E-11 -3.34674200489101E-11 2.893410290694444E-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 16.0   n/a MPO294361  
diameter diameter 3.955 km 0.613 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215237 (2001 DJ2)          Discovered 2001-Feb-16 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 2001 DJ2 = 1999 TO271 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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