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JPL Small-Body Database Browser
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35919 (1999 JY99)
Classification: Main-belt Asteroid          SPK-ID: 2035919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0647000372417329 4.3948e-08  
a 2.914728115786112 2.152e-08 au
q 2.726145098145225 1.3114e-07 au
i 12.89229851612409 5.2221e-06 deg
node 119.5017241928955 2.1344e-05 deg
peri 273.9207169016572 4.4739e-05 deg
M 219.229777073498 4.0003e-05 deg
tp 2459311.228612848880
(2021-Apr-06.72861285)
0.00020345 TDB
period 1817.588232130497
4.98
2.0129e-05
5.511e-08
d
yr
n .1980646626315488 2.1935e-09 deg/d
Q 3.103311133427 2.2912e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1097  
   data-arc span      7746 days (21.21 yr)  
   first obs. used      1998-02-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:55:57  

Additional Information
 Earth MOID = 1.77035 au 
 Jupiter MOID = 2.20311 au 
 T_jup = 3.241 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456215.5 (2012-Oct-15.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06772513377076486 4.4176e-08  
q 2.71267278389965 1.3227e-07 au
tp 2455681.103756782901
(2011-Apr-29.60375678)
0.00018938 TDB
node 119.6089401861378 2.1374e-05 deg
peri 273.7569007319172 4.306e-05 deg
i 12.88945198360896 5.2207e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1097  
   data-arc span      7746 days (21.21 yr)  
   first obs. used      1998-02-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:55:57  

Additional Information
 Jupiter MOID = 2.20311 au 
 T_jup = 3.241 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.951508034130767E-15 -5.775366520362384E-15 7.738822256242986E-13 3.213900782428106E-15 1.618699584717302E-13 2.134403201796748E-15
q -5.775366520362384E-15 1.74940381500833E-14 -2.290410689350769E-12 -8.522828778225014E-15 -4.574729253362525E-13 -4.933232127959814E-15
tp 7.738822256242986E-13 -2.290410689350769E-12 3.586466280702821E-8 -1.736132333125838E-11 7.102945814040483E-9 7.275699558732951E-12
node 3.213900782428106E-15 -8.522828778225014E-15 -1.736132333125838E-11 4.568668060797716E-10 -4.483695825436527E-10 -1.082889116436067E-11
peri 1.618699584717302E-13 -4.574729253362525E-13 7.102945814040483E-9 -4.483695825436527E-10 1.854148318316349E-9 1.213219420193945E-11
i 2.134403201796748E-15 -4.933232127959814E-15 7.275699558732951E-12 -1.082889116436067E-11 1.213219420193945E-11 2.725610779846836E-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 13.5   n/a MPO347782  
diameter diameter 11.478 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.942 h n/a LCDB (Rev. 2019-January); 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.]
geometric albedo albedo 0.064   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35919 (1999 JY99)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JY99 = 1998 FY86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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