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JPL Small-Body Database Browser
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4040 Purcell (1987 SN1)
Classification: Main-belt Asteroid          SPK-ID: 2004040
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06853766826015439 3.632e-08  
a 2.672319512934508 1.1324e-08 au
q 2.489164964671865 9.6768e-08 au
i 2.337098600124604 3.6144e-06 deg
node 55.70406137687078 9.8381e-05 deg
peri 271.9722864666754 0.0001024 deg
M 202.4509778406756 3.0447e-05 deg
tp 2459698.803489734991
(2022-Apr-29.30348973)
0.0001361 TDB
period 1595.625620896426
4.37
1.0142e-05
2.777e-08
d
yr
n .2256168334761077 1.4341e-09 deg/d
Q 2.855474061197151 1.21e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2410  
   data-arc span      25521 days (69.87 yr)  
   first obs. used      1950-03-22  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:02:29  

Additional Information
 Earth MOID = 1.47892 au 
 Jupiter MOID = 2.36047 au 
 T_jup = 3.376 
[ show covariance matrix ]

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 12.9   n/a MPO502192  
diameter diameter 11.922 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.101   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4040 Purcell (1987 SN1)          Discovered 1987-Sep-21 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 SN1 = 1969 OR = 1977 HV = 1979 YY2 = 1981 ER49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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