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JPL Small-Body Database Browser
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91421 (1999 NA65)
Classification: Main-belt Asteroid          SPK-ID: 2091421
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1858507570593047 4.1706e-08  
a 2.626099109118968 1.4995e-08 au
q 2.138036601576442 1.0855e-07 au
i 14.81580977399433 4.5553e-06 deg
node 124.7410208398494 1.8113e-05 deg
peri 296.7004495357894 2.2444e-05 deg
M 241.8084914925599 1.5108e-05 deg
tp 2459510.827380800256
(2021-Oct-23.32738080)
6.7205e-05 TDB
period 1554.408260019181
4.26
1.3314e-05
3.645e-08
d
yr
n .2315993868918051 1.9837e-09 deg/d
Q 3.114161616661494 1.7782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      7311 days (20.02 yr)  
   first obs. used      1999-07-14  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:51  

Additional Information
 Earth MOID = 1.19593 au 
 Jupiter MOID = 2.27429 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457301.5 (2015-Oct-06.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884131783320145 4.1912e-08  
q 2.128050347020364 1.0941e-07 au
tp 2457957.227931316005
(2017-Jul-22.72793132)
6.094e-05 TDB
node 124.8276212675555 1.8162e-05 deg
peri 296.5529408622845 2.2324e-05 deg
i 14.80380008054489 4.5526e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      7311 days (20.02 yr)  
   first obs. used      1999-07-14  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:51  

Additional Information
 Jupiter MOID = 2.27429 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.756586930187983E-15 -4.55860600045372E-15 5.551146977099284E-13 -6.850577911799788E-15 8.193118116252812E-14 5.301233161406764E-15
q -4.55860600045372E-15 1.19714198831866E-14 -1.244050313142736E-12 1.692082191368994E-14 -1.849924666121128E-13 -1.337652776213556E-14
tp 5.551146977099284E-13 -1.244050313142736E-12 3.71363610288014E-9 -3.438528885927634E-11 8.129323798673158E-10 -1.279587307405992E-12
node -6.850577911799788E-15 1.692082191368994E-14 -3.438528885927634E-11 3.298564212842464E-10 -3.254588856066042E-10 -8.467202628770274E-12
peri 8.193118116252812E-14 -1.849924666121128E-13 8.129323798673158E-10 -3.254588856066042E-10 4.983706973442173E-10 7.658932402844897E-12
i 5.301233161406764E-15 -1.337652776213556E-14 -1.279587307405992E-12 -8.467202628770274E-12 7.658932402844897E-12 2.072641569799559E-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 14.6   n/a MPO385379  
diameter diameter 3.777 km 0.973 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91421 (1999 NA65)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 NA65 = 2000 UX75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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