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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205625750218514 7.5312e-08  
a 2.539816389727307 1.0176e-08 au
q 2.233609585699081 1.9493e-07 au
i 12.937844735462 4.1609e-06 deg
node 193.1611567835739 1.4902e-05 deg
peri 170.1028930615627 1.9972e-05 deg
M 353.0463696347715 1.5397e-05 deg
tp 2459229.056896621627
(2021-Jan-14.55689662)
6.3284e-05 TDB
period 1478.433889036318
4.05
8.8849e-06
2.433e-08
d
yr
n .243500911788932 1.4634e-09 deg/d
Q 2.846023193755533 1.1402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1226  
   data-arc span      8868 days (24.28 yr)  
   first obs. used      1996-10-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:11:02  

Additional Information
 Earth MOID = 1.23151 au 
 Jupiter MOID = 2.62389 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457722.5 (2016-Nov-30.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1218170225450084 7.5185e-08  
q 2.230536386009519 1.9477e-07 au
tp 2457752.384867528646
(2016-Dec-29.88486753)
6.1186e-05 TDB
node 193.2510301578413 1.4898e-05 deg
peri 170.4941944575237 1.991e-05 deg
i 12.94159410082642 4.1605e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1226  
   data-arc span      8868 days (24.28 yr)  
   first obs. used      1996-10-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:11:02  

Additional Information
 Jupiter MOID = 2.62389 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.652840736676414E-15 -1.463097296441031E-14 -2.457571130312418E-12 -3.977519686518994E-14 -2.545777788706251E-13 -2.339939083549689E-14
q -1.463097296441031E-14 3.793590843856108E-14 6.329171842005887E-12 1.03442856755119E-13 6.499224454967879E-13 6.096203908268067E-14
tp -2.457571130312418E-12 6.329171842005887E-12 3.743728219896229E-9 2.195652293708099E-11 7.822921782743184E-10 1.481792299402694E-11
node -3.977519686518994E-14 1.03442856755119E-13 2.195652293708099E-11 2.219638662722272E-10 -2.128232702231659E-10 -2.085429070319886E-11
peri -2.545777788706251E-13 6.499224454967879E-13 7.822921782743184E-10 -2.128232702231659E-10 3.964136398993961E-10 2.275141892230264E-11
i -2.339939083549689E-14 6.096203908268067E-14 1.481792299402694E-11 -2.085429070319886E-11 2.275141892230264E-11 1.73098426965851E-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 15.01   n/a E2021B10  
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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