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38079 (1999 HF)
Classification: Main-belt Asteroid          SPK-ID: 2038079
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1920226321864931 1.0403e-08  
a 2.325142721797271 6.9709e-09 au
q 1.878662696148492 2.5564e-08 au
i 24.14812210244954 4.1583e-07 deg
node 182.2542594015628 1.5478e-06 deg
peri 3.076570282286407 3.5254e-06 deg
M 126.4307764514198 4.4818e-06 deg
tp 2458941.697173552421
(2020-Apr-02.19717355)
1.5527e-05 TDB
period 1295.009190930979
3.55
5.8238e-06
1.594e-08
d
yr
n .2779903050272539 1.2501e-09 deg/d
Q 2.77162274744605 8.3095e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1846  
   data-arc span      10150 days (27.79 yr)  
   first obs. used      1993-09-17  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:29:19  

Additional Information
 Earth MOID = .882234 au 
 Jupiter MOID = 2.18299 au 
 T_jup = 3.435 
[ 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 14.36   n/a E2021B10  
diameter diameter 3.423 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.675 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pravec, P.; Oey, J.; Cooney, W.; et al. (2020) CBET 4795.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.287   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

38079 (1999 HF)          Discovered 1999-Apr-16 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 HF = 1993 SY7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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