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JPL Small-Body Database Browser
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80044 (1999 JN40)
Classification: Outer Main-belt Asteroid          SPK-ID: 2080044
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164107544439987 5.2182e-08  
a 3.219320289741962 2.5929e-08 au
q 2.844556786016228 1.7153e-07 au
i 11.3086828233844 5.6311e-06 deg
node 60.11267852645748 2.7014e-05 deg
peri 281.7233348700233 3.5198e-05 deg
M 61.28402242984767 2.4759e-05 deg
tp 2458241.338754399769
(2018-May-02.83875440)
0.00014449 TDB
period 2109.816609444849
5.78
2.5489e-05
6.979e-08
d
yr
n .1706309441249143 2.0614e-09 deg/d
Q 3.594083793467696 2.8947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      7924 days (21.69 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50548  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:45:32  

Additional Information
 Earth MOID = 1.86466 au 
 Jupiter MOID = 1.88681 au 
 T_jup = 3.148 
[ 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 13.7   n/a MPO459365  
diameter diameter 8.610 km 0.343 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 15.743 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.104   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

80044 (1999 JN40)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 JN40 = 2001 QH182 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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