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216523 (2001 HY7)
Classification: Aten [NEO, PHA]          SPK-ID: 2216523
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4120706043763984 7.3543e-08  
a .9138088607391547 8.2615e-09 au
q .5372550912098631 6.7051e-08 au
i 5.210641794108117 8.0936e-06 deg
node 205.099543703192 5.695e-05 deg
peri 211.2863472527574 5.1499e-05 deg
M 310.2719167598378 4.3981e-05 deg
tp 2459244.573819951166
(2021-Jan-30.07381995)
3.948e-05 TDB
period 319.0666952874884
0.87
4.3269e-06
1.185e-08
d
yr
n 1.128290747097968 1.5301e-08 deg/d
Q 1.290362630268446 1.1666e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 5.605105217228233E-14 1.218E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      5545 days (15.18 yr)  
   first obs. used      2001-04-15  
   last obs. used      2016-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48393  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:10  

Additional Information
 Earth MOID = .0351925 au 
 Jupiter MOID = 4.05865 au 
 T_jup = 6.455 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 20.6   n/a MPO385940  

216523 (2001 HY7)          Discovered 2001-Apr-18 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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