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(2016 ND21)
Classification: Centaur          SPK-ID: 3755133
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5554748499977609 3.9828e-07  
a 8.4667506984519 7.2763e-06 au
q 3.763683624260894 4.0641e-07 au
i 21.83334765851242 8.3766e-06 deg
node 286.818156980133 2.2371e-05 deg
peri 60.51283538321768 2.6173e-05 deg
M 47.86930344129109 6.2667e-05 deg
tp 2458003.957324901768
(2017-Sep-07.45732490)
0.00012836 TDB
period 8998.571779170754
24.64
0.0116
3.176e-05
d
yr
n .04000634865560578 5.1572e-08 deg/d
Q 13.16981777264291 1.1318e-05 au
  Orbit Determination Parameters
   # obs. used (total)      619  
   data-arc span      2436 days (6.67 yr)  
   first obs. used      2014-05-05  
   last obs. used      2021-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .34421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 17:14:26  

Additional Information
 Earth MOID = 2.8243 au 
 Jupiter MOID = .433064 au 
 T_jup = 2.584 
[ show covariance matrix ]

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 12.3   n/a MPO438025  
rotation period rot_per 17.53 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hromakina, T.; Velichko, S.; Belskaya, I.; Krugly, Yu. N.; Sergeev, A. (2019) ArXiv: 1912.02533.]

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