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JPL Small-Body Database Browser
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11814 Schwamb (1981 EW26)
Classification: Main-belt Asteroid          SPK-ID: 2011814
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06210201683121977 4.3305e-08  
a 3.072920126279772 2.1542e-08 au
q 2.882085588876552 1.3871e-07 au
i 12.71785180120017 5.0208e-06 deg
node 175.415849351583 1.8868e-05 deg
peri 163.3757718830956 4.0887e-05 deg
M 227.5606624739333 3.7462e-05 deg
tp 2459324.335424454085
(2021-Apr-19.83542445)
0.0002073 TDB
period 1967.547993451591
5.39
2.0689e-05
5.664e-08
d
yr
n .1829688532112838 1.924e-09 deg/d
Q 3.263754663682993 2.288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      13967 days (38.24 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51922  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:57:46  

Additional Information
 Earth MOID = 1.87559 au 
 Jupiter MOID = 2.04969 au 
 T_jup = 3.190 
[ 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 14.1   n/a MPO347618  
diameter diameter 8.933 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11814 Schwamb           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Megan Schwamb (b. 1984) is a scientist at the Gemini Observatory in Hilo, Hawaii whose research includes the search for trans-Neptunian objects.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

[ show close-approach data ]
Alternate Designations
 1981 EW26 = 1989 VU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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