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469738 (2005 NH55)
Classification: Main-belt Asteroid          SPK-ID: 2469738
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1768856972099756 8.2477e-08  
a 2.371751841370296 2.1536e-08 au
q 1.952222863300468 1.972e-07 au
i 2.724521681590024 8.5981e-06 deg
node 232.8173211783377 0.00020926 deg
peri 52.7706431661419 0.0002154 deg
M 37.50737899860258 4.6492e-05 deg
tp 2458861.499451939289
(2020-Jan-12.99945194)
0.0001716 TDB
period 1334.142737718895
3.65
1.8172e-05
4.975e-08
d
yr
n .2698361950502574 3.6753e-09 deg/d
Q 2.791280819440124 2.5346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      6526 days (17.87 yr)  
   first obs. used      2001-05-24  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 04:13:00  

Additional Information
 Earth MOID = .93729 au 
 Jupiter MOID = 2.36213 au 
 T_jup = 3.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457083.5 (2015-Mar-02.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762387024447101 8.2368e-08  
q 1.954909980103675 1.9676e-07 au
tp 2457527.215918606546
(2016-May-18.71591861)
0.00016717 TDB
node 232.8795448559653 0.00020929 deg
peri 52.69185451430265 0.00021548 deg
i 2.723391872257885 8.5958e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      6526 days (17.87 yr)  
   first obs. used      2001-05-24  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 04:13:00  

Additional Information
 Jupiter MOID = 2.36213 au 
 T_jup = 3.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.784471685359445E-15 -1.614131271951263E-14 7.291830695180049E-12 2.444331752645855E-13 2.283560125162133E-12 -1.717579265809324E-14
q -1.614131271951263E-14 3.871359269642234E-14 -1.651088288474891E-11 -5.695467474993691E-13 -5.217553752135586E-12 4.093547613448961E-14
tp 7.291830695180049E-12 -1.651088288474891E-11 2.794493660119215E-8 5.287547540674655E-10 8.664798890391528E-9 -3.034201902875603E-11
node 2.444331752645855E-13 -5.695467474993691E-13 5.287547540674655E-10 4.380436807523227E-8 -4.358036305611162E-8 -5.243976750775985E-10
peri 2.283560125162133E-12 -5.217553752135586E-12 8.664798890391528E-9 -4.358036305611162E-8 4.642996519526152E-8 5.135780252964722E-10
i -1.717579265809324E-14 4.093547613448961E-14 -3.034201902875603E-11 -5.243976750775985E-10 5.135780252964722E-10 7.388829520135938E-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 18.4   n/a MPO472614  

469738 (2005 NH55)          Discovered 2005-Jul-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

Alternate Designations
 2005 NH55 = 2009 SA121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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