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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457215.5 (2015-Jul-12.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205865972168476 3.5267e-08  
q 1.966837113218061 8.8622e-08 au
tp 2456952.070152569899
(2014-Oct-21.57015257)
4.6514e-05 TDB
node 114.0402708256245 1.4536e-05 deg
peri 192.4715304439332 1.7732e-05 deg
i 13.71482246583978 3.8097e-06 deg
  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
 Jupiter MOID = 2.27058 au 
 T_jup = 3.413 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.243750806900749E-15 -3.111189236683527E-15 -6.11498593118745E-13 -6.158068860150635E-15 -1.075113428386821E-13 1.106473412651601E-15
q -3.111189236683527E-15 7.853896818639197E-15 1.664147503931162E-12 1.493691460568671E-14 2.993622305640418E-13 -2.241713086485546E-15
tp -6.11498593118745E-13 1.664147503931162E-12 2.163559335130557E-9 1.034899023132838E-12 4.836273870082209E-10 2.405986133851057E-12
node -6.158068860150635E-15 1.493691460568671E-14 1.034899023132838E-12 2.11304441230967E-10 -2.048092102135146E-10 -3.210413471081767E-12
peri -1.075113428386821E-13 2.993622305640418E-13 4.836273870082209E-10 -2.048092102135146E-10 3.144211539642775E-10 3.70249967334657E-12
i 1.106473412651601E-15 -2.241713086485546E-15 2.405986133851057E-12 -3.210413471081767E-12 3.70249967334657E-12 1.451418017669861E-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 14.17   n/a MPO636386  
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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