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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767808196090617 3.8079e-08  
a 2.628702914646567 1.9211e-08 au
q 2.163998658886617 9.8265e-08 au
i 11.1791640846605 6.0538e-06 deg
node 323.3890107738226 2.172e-05 deg
peri 69.69745950005907 2.8582e-05 deg
M 258.0999545183711 1.8624e-05 deg
tp 2459441.138625598458
(2021-Aug-14.63862560)
8.2729e-05 TDB
period 1556.720651749304
4.26
1.7066e-05
4.672e-08
d
yr
n .2312553633790777 2.5351e-09 deg/d
Q 3.093407170406516 2.2608e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      8120 days (22.23 yr)  
   first obs. used      1997-02-08  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5686  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:03:58  

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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