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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350198426975619 1.9075e-08  
a 2.255240911046123 6.1585e-09 au
q 1.725214546886957 4.3225e-08 au
i 4.055102985216479 3.1445e-07 deg
node 349.0766590014651 3.3953e-06 deg
peri 22.68125105371109 3.861e-06 deg
M 313.8052874854544 3.9339e-06 deg
tp 2459359.236794730676
(2021-May-24.73679473)
1.4039e-05 TDB
period 1237.051666574382
3.39
5.0671e-06
1.387e-08
d
yr
n .2910145224547529 1.192e-09 deg/d
Q 2.785267275205288 7.6058e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2783  
   data-arc span      36908 days (101.05 yr)  
   first obs. used      1919-09-22  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:01:42  

Additional Information
 Earth MOID = .724475 au 
 Jupiter MOID = 2.68539 au 
 T_jup = 3.584 
[ 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 13.33   n/a E2021B10  
rotation period rot_per 2.7401 h n/a LCDB (Rev. 2020-October); 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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