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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049022126848338 3.7035e-08  
a 2.477752850627191 1.1308e-08 au
q 1.970055809047524 9.2153e-08 au
i 13.71299068374184 4.1942e-06 deg
node 113.9687931231653 1.5664e-05 deg
peri 192.5135147892832 1.8997e-05 deg
M 208.373620457069 1.3819e-05 deg
tp 2459800.508866370840
(2022-Aug-09.00886637)
5.6928e-05 TDB
period 1424.575278685883
3.90
9.7524e-06
2.67e-08
d
yr
n .2527068982497621 1.73e-09 deg/d
Q 2.985449892206857 1.3625e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1571  
   data-arc span      12739 days (34.88 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51636  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:42  

Additional Information
 Earth MOID = .954818 au 
 Jupiter MOID = 2.27092 au 
 T_jup = 3.412 
[ 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 14.2   n/a MPO395209  
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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