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100398 (1995 YA7)
Classification: Main-belt Asteroid          SPK-ID: 2100398
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605307223751929 3.3608e-08  
a 2.324759436302689 1.0374e-08 au
q 1.951564124644472 7.6128e-08 au
i 2.163252952915212 4.3237e-06 deg
node 178.4257432387593 9.3641e-05 deg
peri 54.46739946864115 9.4539e-05 deg
M 216.3106093985724 1.461e-05 deg
tp 2459717.258534372377
(2022-May-17.75853437)
5.409e-05 TDB
period 1294.688992662534
3.54
8.6659e-06
2.373e-08
d
yr
n .2780590566848478 1.8612e-09 deg/d
Q 2.697954747960907 1.2039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      10709 days (29.32 yr)  
   first obs. used      1991-10-08  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51923  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:59  

Additional Information
 Earth MOID = .940302 au 
 Jupiter MOID = 2.29321 au 
 T_jup = 3.557 
[ 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 16.6   n/a MPO436467  

100398 (1995 YA7)          Discovered 1995-Dec-16 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1995 YA7 = 1991 TS16 = 1997 EK52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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