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JPL Small-Body Database Browser
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(2019 SR8)
Classification: Apollo [NEO]          SPK-ID: 3872645
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2458754.5 (2019-Sep-28.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5091952910211818 0.0025671  
a 1.782861948117985 0.0083294 au
q .8750370395954565 0.00048881 au
i 1.149661527485482 0.0045731 deg
node 74.54666218176406 0.095629 deg
peri 353.1408869854062 0.086506 deg
M 338.2740652549285 0.16632 deg
tp 2458806.974821588515
(2019-Nov-19.47482159)
0.034055 TDB
period 869.5108400871359
2.38
6.0935
0.01668
d
yr
n .4140258906535582 0.0029015 deg/d
Q 2.690686856640514 0.012571 au
  Orbit Determination Parameters
   # obs. used (total)      12  
   data-arc span      5 days  
   first obs. used      2019-09-26  
   last obs. used      2019-10-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .72239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 21:45:11  

Additional Information
 Earth MOID = .0130255 au 
 Jupiter MOID = 2.64138 au 
 T_jup = 3.926 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.5   .28557 MPO492730 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1946-Feb-04 03:28 2_04:09 Earth 0.266311219060728 0.262954521226883 0.269885771469732 18.7132065530944 18.7126718891633 2431855.644224809 3128.97779141948 417550.961862911 6142.42967724596 -65.555721141929 5456.68628767612 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:45:11 2021-Apr-15 21:45
2019-Oct-16 03:45 00:12 Earth 0.0346636601665407 0.034123908448031 0.0352033870552083 9.82269566875997 9.81486713647174 2458772.656355728 12.4464357575196 26874.7941965557 77.3539815562304 -0.0926009778962001 126.486407468928 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:45:11 2021-Apr-15 21:45
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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