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19391 (1998 DR15)
Classification: Main-belt Asteroid          SPK-ID: 2019391
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07024061081892514 3.2643e-08  
a 2.297662954938808 7.1386e-09 au
q 2.13627370552789 7.6973e-08 au
i 6.145059117727745 4.2085e-06 deg
node 357.9423357481024 2.9573e-05 deg
peri 55.74117637224789 4.1777e-05 deg
M 304.0053584290525 2.9446e-05 deg
tp 2459398.366320801983
(2021-Jul-02.86632080)
0.00010426 TDB
period 1272.119500907249
3.48
5.9285e-06
1.623e-08
d
yr
n .2829922815767351 1.3188e-09 deg/d
Q 2.459052204349727 7.64e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1900  
   data-arc span      13971 days (38.25 yr)  
   first obs. used      1982-10-19  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47912  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:53:24  

Additional Information
 Earth MOID = 1.15213 au 
 Jupiter MOID = 2.74588 au 
 T_jup = 3.583 
[ 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 14.56   n/a E2021B10  
rotation period rot_per 2.365 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

19391 (1998 DR15)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 DR15 = 1982 UT3 = 1991 FP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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