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523954 Guman (1998 UF23)
Classification: Main-belt Asteroid          SPK-ID: 2523954
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2489411525421646 5.8464e-08  
a 2.224148264759795 1.1015e-08 au
q 1.670466232305836 1.3382e-07 au
i 5.765714284990024 6.8301e-06 deg
node 345.4895162672156 8.7975e-05 deg
peri 18.9805254651353 9.424e-05 deg
M 314.1064372607963 3.3801e-05 deg
tp 2459550.951916440946
(2021-Dec-02.45191644)
0.00011424 TDB
period 1211.557495213661
3.32
9.0001e-06
2.464e-08
d
yr
n .2971381890023413 2.2073e-09 deg/d
Q 2.777830297213753 1.3757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      8317 days (22.77 yr)  
   first obs. used      1998-10-22  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45982  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:56:03  

Additional Information
 Earth MOID = .668525 au 
 Jupiter MOID = 2.68818 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458224.5 (2018-Apr-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2483946807664461 5.8444e-08  
q 1.671514693112314 1.3359e-07 au
tp 2458340.036967872578
(2018-Aug-09.53696787)
0.00011165 TDB
node 345.5020439593962 8.8004e-05 deg
peri 19.09390281885204 9.4327e-05 deg
i 5.764530932305238 6.8285e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      8317 days (22.77 yr)  
   first obs. used      1998-10-22  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45982  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:56:03  

Additional Information
 Jupiter MOID = 2.68818 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.415647248204016E-15 -7.795382671036403E-15 -1.094439844310447E-13 3.038263395409896E-14 -6.484849807214964E-14 -1.864181794780438E-14
q -7.795382671036403E-15 1.784557486025433E-14 5.331132935742735E-13 -4.57206897237821E-14 2.386933524228212E-13 4.262541456649115E-14
tp -1.094439844310447E-13 5.331132935742735E-13 1.246660109507023E-8 1.161762799593555E-9 4.039843726285259E-9 -1.680679479723467E-11
node 3.038263395409896E-14 -4.57206897237821E-14 1.161762799593555E-9 7.744621629973481E-9 -7.221141233583608E-9 -7.527951739753599E-11
peri -6.484849807214964E-14 2.386933524228212E-13 4.039843726285259E-9 -7.221141233583608E-9 8.897600427316938E-9 6.81625916007083E-11
i -1.864181794780438E-14 4.262541456649115E-14 -1.680679479723467E-11 -7.527951739753599E-11 6.81625916007083E-11 4.662899468837064E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.96   n/a MPO639575  

523954 Guman           Discovered 1998 Oct. 22 by K. Sarneczky and G. Szabo at Piszkesteto.
István Guman (b. 1919) is a Hungarian astronomer who studied variable stars using photographic measurements at the Konkoly Observatory and solar astronomy in the Debrecen Heliophysical Observatory. He was an active science communicator and contributor to the Hungarian Astronomical Almanac for many decades.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-12-12Last Updated: 2019-12-13

Alternate Designations
 1998 UF23 = 2008 UT317 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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