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39863 (1998 DL15)
Classification: Main-belt Asteroid          SPK-ID: 2039863
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09561473507676127 3.1216e-08  
a 2.304857470412302 8.3059e-09 au
q 2.084479133989135 7.3035e-08 au
i 7.088746587085651 5.957e-06 deg
node 11.68136168664097 2.9279e-05 deg
peri 65.05266872874002 4.4374e-05 deg
M 205.3374691182551 3.2708e-05 deg
tp 2459549.594571558062
(2021-Dec-01.09457156)
0.00011677 TDB
period 1278.099127396564
3.50
6.9087e-06
1.891e-08
d
yr
n .2816682933923171 1.5225e-09 deg/d
Q 2.525235806835468 9.1e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1722  
   data-arc span      10291 days (28.18 yr)  
   first obs. used      1991-03-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4979  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:11:48  

Additional Information
 Earth MOID = 1.11049 au 
 Jupiter MOID = 2.67149 au 
 T_jup = 3.572 
[ show covariance matrix ]

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 14.2   n/a MPO385071  
diameter diameter 3.542 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.04880 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.388   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39863 (1998 DL15)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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