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JPL Small-Body Database Browser
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59476 (1999 HQ2)
Classification: Main-belt Asteroid          SPK-ID: 2059476
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1163870391325512 3.612e-08  
a 2.211331389310571 8.1891e-09 au
q 1.953961076367843 7.9672e-08 au
i 4.316748984299534 4.5247e-06 deg
node 212.3479952987552 6.6051e-05 deg
peri 56.73958258171652 7.0301e-05 deg
M 103.0343853881559 2.5009e-05 deg
tp 2458656.737216746465
(2019-Jun-22.23721675)
8.3063e-05 TDB
period 1201.100016320364
3.29
6.672e-06
1.827e-08
d
yr
n .2997252477798475 1.6649e-09 deg/d
Q 2.4687017022533 9.1422e-09 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      10622 days (29.08 yr)  
   first obs. used      1990-10-18  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58587  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:48:14  

Additional Information
 Earth MOID = .942065 au 
 Jupiter MOID = 2.59837 au 
 T_jup = 3.644 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO474475  

59476 (1999 HQ2)          Discovered 1999-Apr-21 by Child, J. B. at Hawker
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 HQ2 = 2000 UU6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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