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11213 (1999 HF8)
Classification: Main-belt Asteroid          SPK-ID: 2011213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1123500564612938 1.3058e-08  
a 2.716513760817238 9.3204e-09 au
q 2.41131328641154 3.8522e-08 au
i 8.900586021672995 2.8325e-07 deg
node 196.8650927289155 1.7713e-06 deg
peri 353.6690217326064 8.3905e-06 deg
M 344.8107280661628 9.7968e-06 deg
tp 2459465.500263220843
(2021-Sep-08.00026322)
4.4583e-05 TDB
period 1635.37099524613
4.48
8.4164e-06
2.304e-08
d
yr
n .2201335360884387 1.1329e-09 deg/d
Q 3.021714235222936 1.0367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3229  
   data-arc span      15663 days (42.88 yr)  
   first obs. used      1978-08-09  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46302  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:09:47  

Additional Information
 Earth MOID = 1.4122 au 
 Jupiter MOID = 1.93523 au 
 T_jup = 3.334 
[ 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 12.93   n/a MPO614063  
diameter diameter 14.694 km 0.339 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.621 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:
[Mas, V.; Fornas, G.; Lozano, J.; Rodrigo, O.; et al. (2018) Minor Planet Bull. 45, 76-82.]
geometric albedo albedo 0.075   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11213 (1999 HF8)          Discovered 1999-Apr-16 by LINEAR at Socorro
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1916-Aug-07 20:37 00:01 Jupiter 1.94967476505253 1.94967453056933 1.94967499953795 3.47545872034417 3.34812296081633 2421083.358796459 1.38695384735035 113.98490072273 3.26123269671095 85.2693226805341 22422118.9715972 T 43 CATAB v2.0g-lin.ifort 2021-Aug-25 13:11:37 2021-Aug-25 13:11
2082-Feb-08 21:01 < 00:01 Jupiter 1.94631318474922 1.94631299523987 1.94631337425934 3.34931406470778 3.21675582678423 2481534.375377275 0.959789172956538 77.3085493068318 4.6143051248328 -83.6926821727326 14991990.134979 T 43 CATAB v2.0g-lin.ifort 2021-Aug-25 13:11:37 2021-Aug-25 13:11
2118-Feb-16 21:22 00:01 Jupiter 1.935660487198 1.93566036490152 1.93566060949591 3.42803930589765 3.29792006412017 2494690.390179987 1.4757732175002 123.603665593097 3.69380342996637 88.7191217452471 19723385.7037491 T 43 CATAB v2.0g-lin.ifort 2021-Aug-25 13:11:37 2021-Aug-25 13:11
2154-Feb-26 00:55 00:02 Jupiter 1.97601733334726 1.97601675047667 1.97601791622235 3.50624150783824 3.38177864408006 2507848.538372344 2.02244505402075 154.029477883486 3.28017916622346 79.939077450938 24672269.902376 T 43 CATAB v2.0g-lin.ifort 2021-Aug-25 13:11:37 2021-Aug-25 13:11

Alternate Designations
 1999 HF8 = 1972 EN = 1978 PE4 = 1979 YJ6 = 1987 RU6 = 1987 SJ22 = 1987 ST30 = 1990 FV3 = 1996 RA24 = 1997 YF8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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