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399774 (2005 NB7)
Classification: Apollo [NEO, PHA]          SPK-ID: 2399774
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5170881900734083 1.7136e-08  
a 2.044708908961387 1.6521e-08 au
q .98741407999957 3.7274e-08 au
i 12.69277361692542 5.392e-06 deg
node 199.1936479624513 1.0912e-05 deg
peri 348.1923089229282 1.4929e-05 deg
M 57.75365441494349 1.9998e-05 deg
tp 2458829.174254689024
(2019-Dec-11.67425469)
5.7262e-05 TDB
period 1067.937067130293
2.92
1.2943e-05
3.544e-08
d
yr
n .3370985155214943 4.0856e-09 deg/d
Q 3.102003737923204 2.5064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      911  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      6843 days (18.74 yr)  
   first obs. used      2001-12-18  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .2842  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-01 06:54:15  

Additional Information
 Earth MOID = .0069586 au 
 Jupiter MOID = 1.87001 au 
 T_jup = 3.592 
[ 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 18.7   n/a MPO264941  
rotation period rot_per 3.4882 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Kusnirak, P.; Pravec, P.; Galad, A.; Kornos, L.; et al. (2008) CBET 1383.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Vander Haagen, G. (2008) Minor Planet Bull. 35, 181-182.]

399774 (2005 NB7)          Discovered 2005-Jul-05 by CSS at Catalina
Reference: Last Updated: 2014-07-14

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