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101397 (1998 UG39)
Classification: Main-belt Asteroid          SPK-ID: 2101397
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2110485200306383 4.8756e-08  
a 2.357238429954889 1.0203e-08 au
q 1.859746747953564 1.1499e-07 au
i 3.199354385090557 5.2041e-06 deg
node 42.31256955582438 8.4167e-05 deg
peri 331.7605753255251 8.4709e-05 deg
M 358.6111899795037 1.071e-05 deg
tp 2459005.599693048312
(2020-Jun-05.09969305)
3.9341e-05 TDB
period 1321.915503415217
3.62
8.5822e-06
2.35e-08
d
yr
n .2723320810368945 1.7681e-09 deg/d
Q 2.854730111956214 1.2356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      591  
   data-arc span      8053 days (22.05 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:49  

Additional Information
 Earth MOID = .861404 au 
 Jupiter MOID = 2.60821 au 
 T_jup = 3.521 
[ 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 16.2   n/a MPO436474  
diameter diameter 1.580 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101397 (1998 UG39)          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
1939-Nov-06 19:34 00:05 Thisb 0.0255600379968195 0.0255496224062996 0.0255704549936794 3.3366821602087 3.33668208026239 2429574.315536187 4.69899641112827 599.158108963078 35.9517075213255 -30.0409685093658 53484.9119248643 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:51 2020-Nov-12 20:00
1990-Jul-06 01:33 00:02 Thisb 0.0395338311692663 0.0395314794501073 0.0395361829940527 3.30231122439004 3.30231117216391 2448078.564855288 1.67607262859821 157.686746239402 30.8516990484655 -43.0335203682022 133549.443342655 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:51 2020-Nov-12 20:00
2041-Mar-04 05:55 00:03 Thisb 0.0448541139428625 0.0448488894884643 0.0448593385868706 3.25639471813273 3.25639467145224 2466582.746690567 2.80710689123829 298.812964567495 36.7458879939479 -29.6600797590542 92367.2620159525 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:51 2020-Nov-12 20:00
2091-Nov-15 21:24 00:06 Thisb 0.034209933670647 0.0342027650744377 0.0342171071557157 3.30254115955495 3.30254109920537 2485101.391916623 6.45142376829416 739.73915910694 36.5382680972948 -61.2478151244158 122739.179158418 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:51 2020-Nov-12 20:00
2193-Mar-18 21:48 00:15 Thisb 0.0411782579579321 0.0411650654389937 0.0411914705231132 3.26719955902021 3.26719950834085 2522114.408553569 15.46595291919 1577.20926184999 35.0702023798474 -65.3839219212719 159562.950069797 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:00:51 2020-Nov-12 20:00

Alternate Designations
 1998 UG39 = 2003 AD47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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