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JPL Small-Body Database Browser
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159857 (2004 LJ1)
Classification: Apollo [NEO, PHA]          SPK-ID: 2159857
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 219 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5936538519747018 2.9978e-08  
a 2.262588032439041 1.0174e-08 au
q .9193939315497427 6.7477e-08 au
i 23.14393174603455 5.9264e-06 deg
node 235.5786006087726 1.1113e-05 deg
peri 139.9620624080791 1.2868e-05 deg
M 216.1780028146323 1.2769e-05 deg
tp 2459497.126019838025
(2021-Oct-09.62601984)
4.7381e-05 TDB
period 1243.101685698733
3.40
8.385e-06
2.296e-08
d
yr
n .2895981914767079 1.9534e-09 deg/d
Q 3.605782133328339 1.6215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1389  
   data-arc span      8831 days (24.18 yr)  
   first obs. used      1995-02-03  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39455  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-12 08:03:42  

Additional Information
 Earth MOID = .0159054 au 
 Jupiter MOID = 2.15276 au 
 T_jup = 3.276 
[ 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 15.4   n/a MPO226949  
diameter diameter 3.070 km 1.324 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 2.7247 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Galad, A.; Pravec, P.; Kusnirak, P.; Gajdos, S.; et al. (2005) Earth, Moon, and Planets 97, 147-163.]
[Torppa, J. (2011) http://www.astro.helsinki.fi/~psr/NEO/not_obs.html]
[Warner, B.D. (2015) Minor Planet Bull. 42, 41-53.]
geometric albedo albedo 0.130   0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

159857 (2004 LJ1)          Discovered 2004-Jun-10 by LINEAR at Socorro
Reference: 20070630/Numbers.arcLast Updated: 2007-07-05

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