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20329 Manfro (1998 HQ43)
Classification: Main-belt Asteroid          SPK-ID: 2020329
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04317915606213851 2.7496e-08  
a 2.385334809704709 8.2979e-09 au
q 2.282338065696018 6.3983e-08 au
i 5.69564587977262 3.9232e-06 deg
node 48.50404497091705 3.7906e-05 deg
peri 59.15186997854386 7.4401e-05 deg
M 145.04324063325 6.2364e-05 deg
tp 2458658.352524909487
(2019-Jun-23.85252491)
0.00023328 TDB
period 1345.620038413861
3.68
7.0216e-06
1.922e-08
d
yr
n .2675346603966653 1.396e-09 deg/d
Q 2.4883315537134 8.6562e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1533  
   data-arc span      10031 days (27.46 yr)  
   first obs. used      1993-01-24  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:17:19  

Additional Information
 Earth MOID = 1.305 au 
 Jupiter MOID = 2.55059 au 
 T_jup = 3.528 
[ 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 14.75   n/a E2021B10  
diameter diameter 2.665 km 0.404 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.80724 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.227   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20329 Manfro           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Nina Manfro mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Susan E. Wagner High School, Staten Island, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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