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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06194138126630928 4.2928e-08  
a 3.076883353881739 2.1064e-08 au
q 2.88629694894699 1.3807e-07 au
i 12.71319991227958 4.9788e-06 deg
node 175.3472866792193 1.8673e-05 deg
peri 162.2225628138258 4.0829e-05 deg
M 301.899227752556 3.7732e-05 deg
tp 2459318.659121887853
(2021-Apr-14.15912189)
0.00020775 TDB
period 1971.355619712366
5.40
2.0244e-05
5.543e-08
d
yr
n .182615453244568 1.8753e-09 deg/d
Q 3.267469758816488 2.2369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      14040 days (38.44 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52681  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:09:44  

Additional Information
 Earth MOID = 1.8808 au 
 Jupiter MOID = 2.04221 au 
 T_jup = 3.188 
[ 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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