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95999 (2004 NX21)
Classification: Main-belt Asteroid          SPK-ID: 2095999
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736014562926566 4.6192e-08  
a 2.323039865554189 1.3214e-08 au
q 1.919756761868085 1.0629e-07 au
i 13.42200282790269 5.2681e-06 deg
node 133.6053908216347 2.0843e-05 deg
peri 181.3365606886469 2.6589e-05 deg
M 229.2708098521744 1.8503e-05 deg
tp 2459670.127468694882
(2022-Mar-31.62746869)
6.9262e-05 TDB
period 1293.252781104065
3.54
1.1035e-05
3.021e-08
d
yr
n .2783678529518906 2.3751e-09 deg/d
Q 2.726322969240294 1.5508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      7617 days (20.85 yr)  
   first obs. used      2000-04-28  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:09:09  

Additional Information
 Earth MOID = .903988 au 
 Jupiter MOID = 2.57091 au 
 T_jup = 3.520 
[ 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 16.3   n/a MPO453406  
diameter diameter 2.308 km 0.696 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.120   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

95999 (2004 NX21)          Discovered 2004-Jul-15 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 2004 NX21 = 2001 XW248 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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