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JPL Small-Body Database Browser
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52862 (1998 SR4)
Classification: Main-belt Asteroid          SPK-ID: 2052862
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836929085445328 3.3681e-08  
a 2.318674907176323 8.3077e-09 au
q 1.89275076950788 7.9133e-08 au
i 5.929848557529854 4.7634e-06 deg
node 212.971920223151 3.5459e-05 deg
peri 245.8386245424702 3.7611e-05 deg
M 337.2636417003766 1.3599e-05 deg
tp 2459081.947287239779
(2020-Aug-20.44728724)
4.8865e-05 TDB
period 1289.609488904214
3.53
6.9309e-06
1.898e-08
d
yr
n .2791542735203456 1.5003e-09 deg/d
Q 2.744599044844766 9.8338e-09 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      11311 days (30.97 yr)  
   first obs. used      1989-02-04  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56612  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:02  

Additional Information
 Earth MOID = .918524 au 
 Jupiter MOID = 2.44982 au 
 T_jup = 3.549 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO449342  
diameter diameter 2.884 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.111   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52862 (1998 SR4)          Discovered 1998-Sep-19 by Casulli, V. S. at Stroncone
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SR4 = 1989 CM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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