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59475 (1999 HN2)
Classification: Main-belt Asteroid          SPK-ID: 2059475
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05171258059468482 4.2251e-08  
a 2.462295012862726 1.0334e-08 au
q 2.334963383562172 1.0583e-07 au
i 9.298692111809157 4.5768e-06 deg
node 64.47845419555638 2.833e-05 deg
peri 282.9270793476438 5.3054e-05 deg
M 32.38890307607879 4.4397e-05 deg
tp 2458873.529656593055
(2020-Jan-25.02965659)
0.0001741 TDB
period 1411.264948341503
3.86
8.8843e-06
2.432e-08
d
yr
n .2550903006717955 1.6059e-09 deg/d
Q 2.58962664216328 1.0868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1481  
   data-arc span      12419 days (34.00 yr)  
   first obs. used      1985-11-11  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49392  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:48:14  

Additional Information
 Earth MOID = 1.35033 au 
 Jupiter MOID = 2.60252 au 
 T_jup = 3.469 
[ 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 13.9   n/a MPO395555  
diameter diameter 4.083 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.351   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59475 (1999 HN2)          Discovered 1999-Apr-19 by Korlevic, K., Juric, M. at Visnjan
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 HN2 = 1985 VG4 = 2000 SN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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