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91412 (1999 NP42)
Classification: Main-belt Asteroid          SPK-ID: 2091412
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767808170762878 3.7739e-08  
a 2.628702917677639 1.9049e-08 au
q 2.163998668039764 9.7607e-08 au
i 11.17916283700457 5.7478e-06 deg
node 323.389030498213 2.147e-05 deg
peri 69.69744369954559 2.7706e-05 deg
M 258.0999534894031 1.8077e-05 deg
tp 2459441.138630810076
(2021-Aug-14.63863081)
8.0543e-05 TDB
period 1556.72065444181
4.26
1.6921e-05
4.633e-08
d
yr
n .2312553629790981 2.5137e-09 deg/d
Q 3.093407167315514 2.2416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-02-08  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56687  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:36  

Additional Information
 Earth MOID = 1.19811 au 
 Jupiter MOID = 2.49261 au 
 T_jup = 3.352 
[ 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 14.8   n/a MPO474792  
diameter diameter 6.358 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91412 (1999 NP42)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 NP42 = 2001 AR35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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