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117972 (1055 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2117972
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2722765568910896 6.4924e-08  
a 2.611908488317002 1.631e-08 au
q 1.900747038203437 1.77e-07 au
i 11.69193386916647 5.2091e-06 deg
node 199.1059385001257 2.0926e-05 deg
peri 315.3840763161206 2.2651e-05 deg
M 253.6278257138939 1.1375e-05 deg
tp 2459456.076063589287
(2021-Aug-29.57606359)
5.1816e-05 TDB
period 1541.82598967111
4.22
1.4442e-05
3.954e-08
d
yr
n .2334893836345257 2.187e-09 deg/d
Q 3.323069938430566 2.075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      18116 days (49.60 yr)  
   first obs. used      1971-03-25  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57236  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:15:00  

Additional Information
 Earth MOID = .928051 au 
 Jupiter MOID = 1.7609 au 
 T_jup = 3.327 
[ 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 15.6   n/a MPO453650  

117972 (1055 T-1)          Discovered 1971-Mar-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1055 T-1 = 2003 UC257 = 2003 UQ181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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