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22565 (1998 HF30)
Classification: Main-belt Asteroid          SPK-ID: 2022565
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104911971524861 3.3473e-08  
a 2.376592810717617 6.944e-09 au
q 1.876340944845674 8.0695e-08 au
i 3.419991261031859 3.4195e-06 deg
node 125.5801809760764 5.6284e-05 deg
peri 196.6590118215979 5.6749e-05 deg
M 325.1339941892307 7.6416e-06 deg
tp 2459330.107547529503
(2021-Apr-25.60754753)
2.8612e-05 TDB
period 1338.229488168365
3.66
5.8651e-06
1.606e-08
d
yr
n .2690121561233357 1.179e-09 deg/d
Q 2.87684467658956 8.4056e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      10596 days (29.01 yr)  
   first obs. used      1991-06-08  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55501  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:40  

Additional Information
 Earth MOID = .862109 au 
 Jupiter MOID = 2.44617 au 
 T_jup = 3.508 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.49   n/a E2021B10  
diameter diameter 2.019 km 0.377 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.268 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.329   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22565 (1998 HF30)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HF30 = 1999 SM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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