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JPL Small-Body Database Browser
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40343 (1999 NH9)
Classification: Main-belt Asteroid          SPK-ID: 2040343
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1574982768913877 3.1767e-08  
a 2.40904734877505 8.4046e-09 au
q 2.029626542393213 7.6778e-08 au
i 6.752545100452533 3.9536e-06 deg
node 127.4735128795259 2.6817e-05 deg
peri 250.7390360685852 2.9297e-05 deg
M 156.4445376879548 1.1304e-05 deg
tp 2458406.995065309625
(2018-Oct-15.49506531)
4.2513e-05 TDB
period 1365.734973212718
3.74
7.1471e-06
1.957e-08
d
yr
n .2635943334987943 1.3794e-09 deg/d
Q 2.788468155156886 9.7283e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1447  
   data-arc span      7955 days (21.78 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54194  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:58:19  

Additional Information
 Earth MOID = 1.04282 au 
 Jupiter MOID = 2.69552 au 
 T_jup = 3.494 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456748.5 (2014-Apr-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567282607388548 3.184e-08  
q 2.032144894412272 7.6948e-08 au
tp 2457038.040492655756
(2015-Jan-15.54049266)
4.2856e-05 TDB
node 127.5651095968134 2.6778e-05 deg
peri 250.1060936466613 2.9299e-05 deg
i 6.756140209170088 3.9568e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1447  
   data-arc span      7955 days (21.78 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54194  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 05:58:19  

Additional Information
 Jupiter MOID = 2.69552 au 
 T_jup = 3.494 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.013764394963496E-15 -2.439686703827269E-15 -4.822321086346621E-13 1.297902721591293E-15 -1.404446525192147E-13 -1.798514354913007E-15
q -2.439686703827269E-15 5.920930295369705E-15 1.141756046920764E-12 -2.858646237658252E-15 3.295727648854881E-13 4.540884874523675E-15
tp -4.822321086346621E-13 1.141756046920764E-12 1.836670755426369E-9 1.106149139748428E-12 5.172827877612792E-10 1.482771214542998E-12
node 1.297902721591293E-15 -2.858646237658252E-15 1.106149139748428E-12 7.170658456332326E-10 -7.114796892929703E-10 2.413123493645289E-11
peri -1.404446525192147E-13 3.295727648854881E-13 5.172827877612792E-10 -7.114796892929703E-10 8.584570735993256E-10 -2.355437684637855E-11
i -1.798514354913007E-15 4.540884874523675E-15 1.482771214542998E-12 2.413123493645289E-11 -2.355437684637855E-11 1.565592029066141E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO493131  

40343 (1999 NH9)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NH9 = 1998 HS139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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