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101391 (1998 UM34)
Classification: Main-belt Asteroid          SPK-ID: 2101391
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2642860598710377 4.5574e-08  
a 2.351361450350491 1.1225e-08 au
q 1.729929397304711 1.1e-07 au
i 5.941566864868252 4.6133e-06 deg
node 64.58598241503954 4.4457e-05 deg
peri 283.4290545022059 4.5061e-05 deg
M 15.99721862746352 8.1373e-06 deg
tp 2458941.977954558567
(2020-Apr-02.47795456)
2.9594e-05 TDB
period 1316.974959806261
3.61
9.4307e-06
2.582e-08
d
yr
n .2733537166514992 1.9574e-09 deg/d
Q 2.972793503396272 1.4192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      491  
   data-arc span      8032 days (21.99 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59522  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:52  

Additional Information
 Earth MOID = .735705 au 
 Jupiter MOID = 2.47753 au 
 T_jup = 3.503 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457421.5 (2016-Feb-03.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2651473532261032 4.5596e-08  
q 1.727641118665021 1.1013e-07 au
tp 2457625.774136773855
(2016-Aug-25.27413677)
2.7071e-05 TDB
node 64.59401628208296 4.4449e-05 deg
peri 283.6252500169534 4.5047e-05 deg
i 5.943351439609279 4.6154e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      491  
   data-arc span      8032 days (21.99 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59522  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:52  

Additional Information
 Jupiter MOID = 2.47753 au 
 T_jup = 3.503 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.078963969436983E-15 -5.008734718404399E-15 3.515206842999284E-13 -1.739482176351701E-14 1.313577668059361E-13 -8.035401023148293E-15
q -5.008734718404399E-15 1.212859206505583E-14 -8.071378058120631E-13 4.22317882236451E-14 -3.101114460657798E-13 1.938762761644226E-14
tp 3.515206842999284E-13 -8.071378058120631E-13 7.328328490566546E-10 7.929565613046661E-13 2.176850595386609E-10 -3.233121180054189E-12
node -1.739482176351701E-14 4.22317882236451E-14 7.929565613046661E-13 1.975723977393274E-9 -1.964560662245334E-9 -5.944764040356969E-11
peri 1.313577668059361E-13 -3.101114460657798E-13 2.176850595386609E-10 -1.964560662245334E-9 2.029247763030988E-9 5.818420551021623E-11
i -8.035401023148293E-15 1.938762761644226E-14 -3.233121180054189E-12 -5.944764040356969E-11 5.818420551021623E-11 2.130233417509896E-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 16.3   n/a MPO432541  
diameter diameter 3.163 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101391 (1998 UM34)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 UM34 = 2003 AQ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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