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74569 (1999 NR7)
Classification: Main-belt Asteroid          SPK-ID: 2074569
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648092438433504 3.2367e-08  
a 2.181352086230592 7.4007e-09 au
q 1.821845098342813 7.1111e-08 au
i 1.643202944229257 3.4501e-06 deg
node 212.3429132979702 0.00015037 deg
peri 146.8765939375767 0.00015092 deg
M 132.8781279047248 1.4334e-05 deg
tp 2458566.151744845564
(2019-Mar-23.65174485)
4.589e-05 TDB
period 1176.757787916104
3.22
5.9886e-06
1.64e-08
d
yr
n .3059253175944699 1.5569e-09 deg/d
Q 2.54085907411837 8.6204e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      9620 days (26.34 yr)  
   first obs. used      1993-12-17  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55834  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:30  

Additional Information
 Earth MOID = .818544 au 
 Jupiter MOID = 2.90711 au 
 T_jup = 3.662 
[ 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 15.4   n/a MPO502608  
diameter diameter 2.239 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.872449 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.293   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74569 (1999 NR7)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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