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21452 (1998 HA29)
Classification: Main-belt Asteroid          SPK-ID: 2021452
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049632565735484 3.5341e-08  
a 2.477387985338579 1.0765e-08 au
q 1.969614476067402 8.8744e-08 au
i 13.71265684220928 3.8093e-06 deg
node 113.9669154769788 1.4536e-05 deg
peri 192.5600430591304 1.7758e-05 deg
M 257.8549946699982 1.3835e-05 deg
tp 2459800.614191536778
(2022-Aug-09.11419154)
5.6384e-05 TDB
period 1424.26062325056
3.90
9.283e-06
2.542e-08
d
yr
n .2527627276378529 1.6475e-09 deg/d
Q 2.985161494609757 1.2971e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1825  
   data-arc span      12900 days (35.32 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49542  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:08:10  

Additional Information
 Earth MOID = .955873 au 
 Jupiter MOID = 2.27058 au 
 T_jup = 3.413 
[ 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 14.18   n/a MPCxxxxx  
diameter diameter 5.876 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21452 (1998 HA29)          Discovered 1998-Apr-23 by JPL/GEODSS NEAT at Haleakala
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HA29 = 1998 GV7 = 1999 VK203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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