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2623 Zech (A919 SA)
Classification: Main-belt Asteroid          SPK-ID: 2002623
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2352084149474462 3.3136e-08  
a 2.254610406236396 6.4366e-09 au
q 1.724307066261515 7.574e-08 au
i 4.054804172673943 3.7425e-06 deg
node 349.0955929527747 4.6193e-05 deg
peri 22.74732621837527 4.6639e-05 deg
M 255.5260952257036 8.0083e-06 deg
tp 2459359.348399754972
(2021-May-24.84839976)
2.8291e-05 TDB
period 1236.532933184414
3.39
5.2952e-06
1.45e-08
d
yr
n .291136604888396 1.2467e-09 deg/d
Q 2.784913746211277 7.9505e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2744  
   data-arc span      36908 days (101.05 yr)  
   first obs. used      1919-09-22  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42526  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:07:35  

Additional Information
 Earth MOID = .725079 au 
 Jupiter MOID = 2.68471 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456863.5 (2014-Jul-25.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2341008042156464 3.3004e-08  
q 1.727054533778426 7.5326e-08 au
tp 2456885.349646162997
(2014-Aug-15.84964616)
2.4691e-05 TDB
node 349.1353817446764 4.6164e-05 deg
peri 22.55883006427491 4.6622e-05 deg
i 4.056756672833929 3.7411e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2744  
   data-arc span      36908 days (101.05 yr)  
   first obs. used      1919-09-22  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42526  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:07:35  

Additional Information
 Jupiter MOID = 2.68471 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.089237240958246E-15 -2.480734479270122E-15 2.301309886397588E-14 -4.883838670897933E-16 1.787915506810379E-17 -9.360381396017172E-16
q -2.480734479270122E-15 5.673975750771886E-15 -2.957770280137141E-14 1.496326152846981E-15 4.571905280577355E-15 2.242552097654156E-15
tp 2.301309886397588E-14 -2.957770280137141E-14 6.09665216654544E-10 1.525235315311286E-12 1.694872429259297E-10 -1.478005471341193E-13
node -4.883838670897933E-16 1.496326152846981E-15 1.525235315311286E-12 2.131134429193498E-9 -2.125127064820916E-9 2.011900401125854E-11
peri 1.787915506810379E-17 4.571905280577355E-15 1.694872429259297E-10 -2.125127064820916E-9 2.173606279902284E-9 -2.012751205567479E-11
i -9.360381396017172E-16 2.242552097654156E-15 -1.478005471341193E-13 2.011900401125854E-11 -2.012751205567479E-11 1.399546345325567E-11

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 13.3   n/a MPO365277  
rotation period rot_per 2.7401 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pray, D.; Pravec, P.; Chorny, V.; Krugly, Yu.N.; et al. (2014) CBET 4012.]
[Ditteon, R.; Black, S.; Masner, Z.; Osborne, J.; Trent, L. (2018) Minor Planet Bull. 45, 338-340.]

2623 Zech (A919 SA)          Discovered 1919-Sep-22 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A919 SA = 1963 RE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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