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JPL Small-Body Database Browser
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(2021 ND1)
Classification: Apollo [NEO]          SPK-ID: 54166391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459410.5 (2021-Jul-15.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6087824669495628 0.0041508  
a 2.550091803763499 0.027168 au
q .9976406245204956 4.3914e-05 au
i 18.39087863424274 0.075588 deg
node 111.3362121425586 0.00012092 deg
peri 216.8465328436498 0.023399 deg
M 352.7947522319711 0.12784 deg
tp 2459440.269981773791
(2021-Aug-13.76998177)
0.052466 TDB
period 1487.414976361955
4.07
23.77
0.06508
d
yr
n .2420306408911644 0.0038678 deg/d
Q 4.102542983006502 0.043708 au
  Orbit Determination Parameters
   # obs. used (total)      22  
   data-arc span      13 days  
   first obs. used      2021-07-04  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .46299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-18 05:52:23  

Additional Information
 Earth MOID = .0505009 au 
 Jupiter MOID = 1.45817 au 
 T_jup = 3.094 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.722876930215858E-5 1.820270363701333E-7 -.0002177682953316125 4.88875103671802E-7 -9.710776019655276E-5 .000313745111357286
q 1.820270363701333E-7 1.92844139862558E-9 -2.30154215336903E-6 5.10644353311659E-9 -1.026975361624088E-6 3.314938632450566E-6
tp -.0002177682953316125 -2.30154215336903E-6 .002752658300125544 -6.17092303812804E-6 .001227568246721672 -.003965694791347335
node 4.88875103671802E-7 5.10644353311659E-9 -6.17092303812804E-6 1.462243380084145E-8 -2.744474282150783E-6 8.901380737379848E-6
peri -9.710776019655276E-5 -1.026975361624088E-6 .001227568246721672 -2.744474282150783E-6 .0005475279466374909 -.001768407883295559
i .000313745111357286 3.314938632450566E-6 -.003965694791347335 8.901380737379848E-6 -.001768407883295559 .005713471843831139

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.47   .83815 E2021-PF7 autocmod 2.9c

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