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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06072555584226692 4.2444e-08  
a 3.074677544772351 2.1462e-08 au
q 2.887966041830313 1.3662e-07 au
i 12.73428069931766 4.842e-06 deg
node 175.2398602227195 1.8478e-05 deg
peri 161.3188813807278 4.0437e-05 deg
M 15.10385367361628 3.7299e-05 deg
tp 2459313.880405377150
(2021-Apr-09.38040538)
0.00020374 TDB
period 1969.236110661062
5.39
2.0619e-05
5.645e-08
d
yr
n .1828120041324806 1.9141e-09 deg/d
Q 3.261389047714388 2.2765e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      14788 days (40.49 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51338  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:39:41  

Additional Information
 Earth MOID = 1.88175 au 
 Jupiter MOID = 2.03748 au 
 T_jup = 3.189 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456762.5 (2014-Apr-15.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06193087625690494 4.2555e-08  
q 2.88303521078502 1.3683e-07 au
tp 2457363.497401902855
(2015-Dec-06.99740190)
0.00019481 TDB
node 175.4386538160615 1.8521e-05 deg
peri 164.6893750865742 3.981e-05 deg
i 12.71743219763025 4.8389e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      14788 days (40.49 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51338  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:39:41  

Additional Information
 Jupiter MOID = 2.03748 au 
 T_jup = 3.189 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.810957609536737E-15 -5.768143109495895E-15 1.155421431394368E-12 -2.700580921360702E-15 2.494676415477465E-13 -6.58257287619548E-16
q -5.768143109495895E-15 1.872236357169712E-14 -2.749266231214822E-12 6.545692553382051E-15 -6.460852772582819E-13 3.106533360660413E-15
tp 1.155421431394368E-12 -2.749266231214822E-12 3.795276383835004E-8 -4.919298998890332E-12 6.879121658578612E-9 3.587786886539741E-12
node -2.700580921360702E-15 6.545692553382051E-15 -4.919298998890332E-12 3.430317476936755E-10 -3.352822206576512E-10 1.251305471030995E-11
peri 2.494676415477465E-13 -6.460852772582819E-13 6.879121658578612E-9 -3.352822206576512E-10 1.584838072149095E-9 -1.160692383288073E-11
i -6.58257287619548E-16 3.106533360660413E-15 3.587786886539741E-12 1.251305471030995E-11 -1.160692383288073E-11 2.341453210267677E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.14   n/a E2021B10  
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

Alternate Designations
 1981 EW26 = 1989 VU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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