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19540 (1999 JF23)
Classification: Main-belt Asteroid          SPK-ID: 2019540
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656545132622009 4.1525e-08  
a 2.147738890037846 7.8637e-09 au
q 1.791956249594327 9.202e-08 au
i 1.238906720860399 4.5752e-06 deg
node 102.5234322690835 0.00020831 deg
peri 190.6230710435041 0.00020889 deg
M 256.1184130798718 1.4215e-05 deg
tp 2459532.246785377164
(2021-Nov-13.74678538)
4.5334e-05 TDB
period 1149.663249056878
3.15
6.3141e-06
1.729e-08
d
yr
n .3131351726649736 1.7198e-09 deg/d
Q 2.503521530481365 9.1664e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      10636 days (29.12 yr)  
   first obs. used      1992-01-31  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:57:24  

Additional Information
 Earth MOID = .773872 au 
 Jupiter MOID = 2.66744 au 
 T_jup = 3.690 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO290614  
rotation period rot_per 3.28 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

19540 (1999 JF23)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JF23 = 1993 NL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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