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1750 Eckert (1950 NA1)
Classification: Mars-crossing Asteroid          SPK-ID: 2001750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1724399076669062 3.6465e-08  
a 1.926600880265328 3.7865e-09 au
q 1.594378002361395 6.9274e-08 au
i 19.08685403894948 3.9243e-06 deg
node 273.748870878798 1.0099e-05 deg
peri 109.0266533777868 1.4824e-05 deg
M 68.29051684826115 1.0565e-05 deg
tp 2459015.213423379669
(2020-Jun-14.71342338)
2.8523e-05 TDB
period 976.7559342321398
2.67
2.8795e-06
7.884e-09
d
yr
n .3685669954828664 1.0866e-09 deg/d
Q 2.258823758169262 4.4394e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3636  
   data-arc span      25761 days (70.53 yr)  
   first obs. used      1950-07-15  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .29951  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:54  

Additional Information
 Earth MOID = .693615 au 
 Jupiter MOID = 3.23512 au 
 T_jup = 3.834 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.91   n/a E2021B10  
rotation period rot_per 375. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 57-64.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
B-V BV 0.885   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=12.22, mean=12.42, max.=12.62) deg.
U-B UB 0.500   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=12.22, mean=12.42, max.=12.62) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1750 Eckert (1950 NA1)          Discovered 1950-Jul-15 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1950 NA1 = 1950 OA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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