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74581 (1999 NS38)
Classification: Main-belt Asteroid          SPK-ID: 2074581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544001699727827 4.3204e-08  
a 2.238952402700494 9.5501e-09 au
q 1.893257771162568 9.6489e-08 au
i 4.742014242108091 4.717e-06 deg
node 83.94877563109512 6.2455e-05 deg
peri 196.1099212628236 6.4558e-05 deg
M 100.0312892574058 1.7087e-05 deg
tp 2458660.484211304803
(2019-Jun-25.98421130)
5.7692e-05 TDB
period 1223.673960807304
3.35
7.8292e-06
2.144e-08
d
yr
n .2941960126065725 1.8823e-09 deg/d
Q 2.58464703423842 1.1025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      483  
   data-arc span      9395 days (25.72 yr)  
   first obs. used      1994-01-09  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:55:23  

Additional Information
 Earth MOID = .877349 au 
 Jupiter MOID = 2.53537 au 
 T_jup = 3.616 
[ 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 MPO436304  

74581 (1999 NS38)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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