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JPL Small-Body Database Browser
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35775 (1999 JW9)
Classification: Main-belt Asteroid          SPK-ID: 2035775
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216872205252275 7.7841e-08  
a 2.539416770829273 1.3622e-08 au
q 2.23040220223191 2.0039e-07 au
i 12.94088605246298 6.1562e-06 deg
node 193.2471879047837 1.7025e-05 deg
peri 170.237676262376 2.3373e-05 deg
M 206.8335391876112 1.9073e-05 deg
tp 2459229.369567321827
(2021-Jan-14.86956732)
8.0923e-05 TDB
period 1478.084973923651
4.05
1.1893e-05
3.256e-08
d
yr
n .2435583923462546 1.9598e-09 deg/d
Q 2.848431339426636 1.528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      8248 days (22.58 yr)  
   first obs. used      1996-10-09  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60205  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:55:29  

Additional Information
 Earth MOID = 1.22903 au 
 Jupiter MOID = 2.61701 au 
 T_jup = 3.401 
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Orbital Elements at Epoch 2456790.5 (2014-May-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .121037742438729 7.7882e-08  
q 2.233152467849358 2.0072e-07 au
tp 2456274.935349766528
(2012-Dec-13.43534977)
7.2003e-05 TDB
node 193.2738482743888 1.7033e-05 deg
peri 170.7308393970119 2.3473e-05 deg
i 12.93512367385674 6.1541e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      8248 days (22.58 yr)  
   first obs. used      1996-10-09  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60205  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:55:29  

Additional Information
 Jupiter MOID = 2.61701 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.06561153127058E-15 -1.560513918125809E-14 -1.936856892804041E-12 -3.933324622280681E-14 -1.866690379151447E-13 -2.018872625653764E-14
q -1.560513918125809E-14 4.028663394373158E-14 5.147835788676303E-12 1.014155346411734E-13 5.274053423615293E-13 5.252950829716963E-14
tp -1.936856892804041E-12 5.147835788676303E-12 5.184455856132771E-9 1.839428106840357E-11 1.148597953959587E-9 1.019200918214145E-11
node -3.933324622280681E-14 1.014155346411734E-13 1.839428106840357E-11 2.901337132012544E-10 -2.794726640178416E-10 -1.471060304634601E-11
peri -1.866690379151447E-13 5.274053423615293E-13 1.148597953959587E-9 -2.794726640178416E-10 5.509940283216179E-10 1.618674214432448E-11
i -2.018872625653764E-14 5.252950829716963E-14 1.019200918214145E-11 -1.471060304634601E-11 1.618674214432448E-11 3.787251096414561E-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 14.9   n/a MPO436015  
diameter diameter 3.160 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.213   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35775 (1999 JW9)          Discovered 1999-May-08 by CSS at Catalina
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 JW9 = 2000 RV18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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