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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 
[ 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 16.3   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2054-Sep-01 02:51 00:03 Europ 0.0135736404346139 0.0135664548457573 0.0135808269556062 4.22288217984179 4.22288199441759 2471511.618786634 2.98740114286971 401.282464156173 72.3440160927975 27.2972586772128 13625.2253626056 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:53 2020-Nov-12 20:00
2089-Jul-26 15:47 < 00:01 Eunom 0.0252779066575369 0.0252595700660909 0.0252962491366989 6.00231146901521 6.0023113764955 2484259.157593501 0.760784666883495 1098.21460209505 42.2021749692084 -33.6880526868975 49758.009560208 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:53 2020-Nov-12 20:00

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