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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2643517537936302 4.3134e-08  
a 2.351793299081792 1.0839e-08 au
q 1.730092615909413 1.0375e-07 au
i 5.941193506679562 4.5485e-06 deg
node 64.58615533215921 4.3039e-05 deg
peri 283.4606521667656 4.3648e-05 deg
M 70.6307236637586 8.304e-06 deg
tp 2458942.042996464649
(2020-Apr-02.54299646)
2.9585e-05 TDB
period 1317.337787952871
3.61
9.1067e-06
2.493e-08
d
yr
n .2732784281239182 1.8892e-09 deg/d
Q 2.973493982254171 1.3704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      531  
   data-arc span      8126 days (22.25 yr)  
   first obs. used      1998-10-17  
   last obs. used      2021-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58416  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:34  

Additional Information
 Earth MOID = .734147 au 
 Jupiter MOID = 2.47759 au 
 T_jup = 3.502 
[ 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 16.40   n/a E2021B55  
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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