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19582 Blow (1999 NL4)
Classification: Main-belt Asteroid          SPK-ID: 2019582
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04540191013307661 2.7811e-08  
a 2.59226399668134 1.2121e-08 au
q 2.474570259662804 7.0462e-08 au
i 2.077205219922394 3.8769e-06 deg
node 38.34320764693518 0.00010676 deg
peri 225.3388911272593 0.00012721 deg
M 80.51178996165723 6.5959e-05 deg
tp 2458859.562909729168
(2020-Jan-11.06290973)
0.0002806 TDB
period 1524.464336912044
4.17
1.0692e-05
2.927e-08
d
yr
n .2361485219977112 1.6563e-09 deg/d
Q 2.709957733699877 1.2671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1290  
   data-arc span      10685 days (29.25 yr)  
   first obs. used      1991-09-08  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:58:54  

Additional Information
 Earth MOID = 1.45768 au 
 Jupiter MOID = 2.30415 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457225.5 (2015-Jul-22.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04411343944784504 2.7752e-08  
q 2.477881958231987 7.0446e-08 au
tp 2457340.121562344630
(2015-Nov-13.62156234)
0.00029526 TDB
node 38.42827550989271 0.0001066 deg
peri 226.6540127494753 0.00012818 deg
i 2.078929158062863 3.878e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1290  
   data-arc span      10685 days (29.25 yr)  
   first obs. used      1991-09-08  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:58:54  

Additional Information
 Jupiter MOID = 2.30415 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.701832677540205E-16 -1.929389261701674E-15 -6.667566858854622E-13 -1.986594945004678E-15 -1.624589614062329E-13 -8.512659979666855E-17
q -1.929389261701674E-15 4.962656125599825E-15 -2.643698359663458E-13 5.074151294530739E-15 -6.075391188460612E-14 4.316084329682796E-16
tp -6.667566858854622E-13 -2.643698359663458E-13 8.717686891839993E-8 2.536518513388661E-11 2.103159827078393E-8 -8.336675862898042E-12
node -1.986594945004678E-15 5.074151294530739E-15 2.536518513388661E-11 1.136347966770345E-8 -1.134965152595838E-8 -1.453909012601879E-10
peri -1.624589614062329E-13 -6.075391188460612E-14 2.103159827078393E-8 -1.134965152595838E-8 1.642885525104784E-8 1.432862509630439E-10
i -8.512659979666855E-17 4.316084329682796E-16 -8.336675862898042E-12 -1.453909012601879E-10 1.432862509630439E-10 1.503875106046641E-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 14.90   n/a E2021B10  
rotation period rot_per 11.553 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.]

19582 Blow           Discovered 1999 July 13 by J. Broughton at Reedy Creek.
Graham L. Blow (b. 1954) is a well-known astronomer, writer and award-winning photographer. As director of the occultation section of the Royal Astronomical Society of New Zealand he has been a staunch promoter and coordinator of minor-planet occultation observations for the Australasian region since 1978.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

[ show close-approach data ]
Alternate Designations
 1999 NL4 = 1998 FS35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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