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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06870645993011686 3.4507e-08  
a 2.671794220807936 1.0494e-08 au
q 2.488224698234478 9.2668e-08 au
i 2.337236792164643 3.3598e-06 deg
node 55.70015761001003 9.434e-05 deg
peri 272.0808788431941 9.8131e-05 deg
M 247.4781562629877 2.9232e-05 deg
tp 2459699.082780226891
(2022-Apr-29.58278023)
0.00013039 TDB
period 1595.155170947847
4.37
9.398e-06
2.573e-08
d
yr
n .2256833733523784 1.3296e-09 deg/d
Q 2.855363743381394 1.1215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2765  
   data-arc span      25933 days (71.00 yr)  
   first obs. used      1950-03-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45808  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:22:44  

Additional Information
 Earth MOID = 1.47605 au 
 Jupiter MOID = 2.36033 au 
 T_jup = 3.376 
[ 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 12.94   n/a E2021B10  
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

Alternate Designations
 1987 SN1 = 1969 OR = 1977 HV = 1979 YY2 = 1981 ER49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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