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JPL Small-Body Database Browser
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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05171255970617873 4.2273e-08  
a 2.462295012374054 1.0344e-08 au
q 2.334963434532435 1.0587e-07 au
i 9.298688658916797 4.5891e-06 deg
node 64.478484881231 2.8332e-05 deg
peri 282.927007050316 5.3128e-05 deg
M 32.38894164947506 4.4485e-05 deg
tp 2458873.529505416180
(2020-Jan-25.02950542)
0.00017444 TDB
period 1411.26494792138
3.86
8.8926e-06
2.435e-08
d
yr
n .2550903007477341 1.6074e-09 deg/d
Q 2.589626590215674 1.0878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      12407 days (33.97 yr)  
   first obs. used      1985-11-11  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49217  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:22:50  

Additional Information
 Earth MOID = 1.35033 au 
 Jupiter MOID = 2.60252 au 
 T_jup = 3.469 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456404.5 (2013-Apr-22.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05217782705062508 4.2322e-08  
q 2.335517611074029 1.0617e-07 au
tp 2456053.769773668423
(2012-May-06.26977367)
0.00017484 TDB
node 64.52696844318461 2.8297e-05 deg
peri 283.9346591847698 5.2701e-05 deg
i 9.303582309168631 4.5908e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      12407 days (33.97 yr)  
   first obs. used      1985-11-11  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49217  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:22:50  

Additional Information
 Jupiter MOID = 2.60252 au 
 T_jup = 3.469 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.791188211090508E-15 -4.474216141893165E-15 2.802340267787131E-13 5.773842737496615E-15 4.092733441742932E-14 1.221357550318235E-15
q -4.474216141893165E-15 1.127242109431084E-14 -1.01651651049791E-12 -1.376458409175312E-14 -1.763808537028312E-13 -2.900256387238246E-15
tp 2.802340267787131E-13 -1.01651651049791E-12 3.056958532298813E-8 -3.655300181959141E-11 7.791893725169793E-9 -3.719150593955174E-13
node 5.773842737496615E-15 -1.376458409175312E-14 -3.655300181959141E-11 8.00743393063118E-10 -7.993351014001114E-10 -1.390796798347896E-12
peri 4.092733441742932E-14 -1.763808537028312E-13 7.791893725169793E-9 -7.993351014001114E-10 2.77737063623556E-9 1.317598545661334E-12
i 1.221357550318235E-15 -2.900256387238246E-15 -3.719150593955174E-13 -1.390796798347896E-12 1.317598545661334E-12 2.107500984049381E-11

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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