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117921 (4621 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117921
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974098017697618 5.0971e-08  
a 2.372482199237806 1.103e-08 au
q 1.904130958583983 1.1824e-07 au
i 1.694265414387506 4.6796e-06 deg
node 155.2938539216351 0.00019034 deg
peri 199.2626154932725 0.00019085 deg
M 125.4428143657786 1.4912e-05 deg
tp 2458535.400193277013
(2019-Feb-20.90019328)
5.3886e-05 TDB
period 1334.759039541708
3.65
9.308e-06
2.548e-08
d
yr
n .2697116028699882 1.8808e-09 deg/d
Q 2.840833439891631 1.3207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      21663 days (59.31 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:51:47  

Additional Information
 Earth MOID = .899355 au 
 Jupiter MOID = 2.59858 au 
 T_jup = 3.517 
[ 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 16.7   n/a MPO406908  

117921 (4621 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
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
2014-Dec-01 23:31 < 00:01 Vesta 0.0313754642004775 0.0313741593981245 0.0313767690066302 4.90788864046238 4.90788786776442 2456993.480147803 0.474347711852865 94.1479432964096 62.8011182344867 76.6012194884729 73408.3311739404 T 18 CATAB v2.0f-lin.ifort 2020-Feb-24 05:52:04 2020-Feb-24 05:52

Alternate Designations
 4621 P-L = 1982 UC5 = 2000 QL14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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