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101733 (1999 ER12)
Classification: Main-belt Asteroid          SPK-ID: 2101733
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1855496607628356 3.0928e-08  
a 2.599878633012075 1.3302e-08 au
q 2.11747203463214 7.9419e-08 au
i 11.84157826214692 8.7474e-06 deg
node 20.16039254993803 1.7114e-05 deg
peri 82.58996298854628 3.3348e-05 deg
M 70.45735698382934 2.5745e-05 deg
tp 2458700.824053228155
(2019-Aug-05.32405323)		 0.00010895 TDB
period 1531.186315470566
4.19		 1.1751e-05
3.217e-08		 d
yr
n .2351118190926127 1.8043e-09 deg/d
Q 3.08228523139201 1.577e-08 au
   Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      7768 days (21.27 yr)  
   first obs. used      1999-02-18  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:48  

Additional Information
 Earth MOID = 1.17195 au 
 Jupiter MOID = 2.18875 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457378.5 (2015-Dec-22.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185624207891404 3.0793e-08  
q 2.118400465959935 7.9041e-08 au
tp 2457171.060905259928
(2015-May-28.56090526)		 0.00010693 TDB
node 20.17115582471698 1.7116e-05 deg
peri 83.00986840462824 3.3305e-05 deg
i 11.84005790030623 8.7459e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      7768 days (21.27 yr)  
   first obs. used      1999-02-18  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:48  

Additional Information
 Jupiter MOID = 2.18875 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.482238272286324E-16 -2.411823938002298E-15 -5.074095429985368E-13 3.694269350302067E-15 -1.592157143449352E-13 -2.410659556069055E-15
q -2.411823938002298E-15 6.247451195632767E-15 1.412202073019451E-12 -1.042437177590585E-14 4.406317710195421E-13 5.906785085746512E-15
tp -5.074095429985368E-13 1.412202073019451E-12 1.143431320069172E-8 -6.101775303152597E-11 3.059488184570065E-9 3.899707194438911E-12
node 3.694269350302067E-15 -1.042437177590585E-14 -6.101775303152597E-11 2.929554879970873E-10 -3.021857624682584E-10 -2.5998405130872E-11
peri -1.592157143449352E-13 4.406317710195421E-13 3.059488184570065E-9 -3.021857624682584E-10 1.109200277058966E-9 2.650076406191072E-11
i -2.410659556069055E-15 5.906785085746512E-15 3.899707194438911E-12 -2.5998405130872E-11 2.650076406191072E-11 7.649002409163789E-11

[ 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 15.3   n/a MPO459476  
diameter diameter 7.753 km 0.525 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.029   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

101733 (1999 ER12)          Discovered 1999-Mar-15 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 ER12 = 2003 AA78 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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