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100421 (1996 FF4)
Classification: Main-belt Asteroid          SPK-ID: 2100421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192018810733308 4.3832e-08  
a 2.692436040565066 1.7255e-08 au
q 2.371492599860079 1.1909e-07 au
i 10.45801113244699 5.2682e-06 deg
node 28.01637010053531 2.3584e-05 deg
peri 191.8723681646102 3.1261e-05 deg
M 107.3802263207359 2.3336e-05 deg
tp 2458519.175094685573
(2019-Feb-04.67509469)
0.00010267 TDB
period 1613.67666888343
4.42
1.5512e-05
4.247e-08
d
yr
n .223093019154264 2.1446e-09 deg/d
Q 3.013379481270053 1.9311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      8894 days (24.35 yr)  
   first obs. used      1996-03-23  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5146  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:02:58  

Additional Information
 Earth MOID = 1.36517 au 
 Jupiter MOID = 1.95968 au 
 T_jup = 3.337 
[ 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 15.1   n/a MPO436467  
diameter diameter 5.051 km 0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.44 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]
geometric albedo albedo 0.076   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100421 (1996 FF4)          Discovered 1996-Mar-23 by AMOS at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1928-Feb-13 06:22 00:02 Jupiter 1.97918971160206 1.97918902797132 1.97919039524776 3.67745410570289 3.55917688847913 2425289.765411086 2.24387414783667 330.183420927423 14.5497998351749 -85.1796920359293 2670073.31828945 T 25 CATAB v2.0f-lin.ifort 2020-Aug-25 09:03:08 2020-Aug-25 09:03
2083-Mar-04 04:26 00:02 Jupiter 1.97576091947459 1.97576042060096 1.97576141834934 3.49400460289641 3.36907319392311 2481922.684985596 1.81024460948317 124.483541776091 16.000628466896 -81.4088047814515 2921055.29041817 T 25 CATAB v2.0f-lin.ifort 2020-Aug-25 09:03:08 2020-Aug-25 09:03
2118-May-15 08:05 00:03 Jupiter 1.95413841613904 1.95413802530954 1.9541388069703 3.59832718568453 3.47578153618524 2494777.837132527 2.73556020399345 193.753316367915 13.4522127423144 -87.0956845037417 2588483.4208134 T 25 CATAB v2.0f-lin.ifort 2020-Aug-25 09:03:08 2020-Aug-25 09:03
2153-Jul-27 23:04 00:04 Jupiter 1.98020403885463 1.98020310990579 1.98020496783858 3.71297994996775 3.59593241986854 2507635.461296826 3.71144211273416 461.523345209328 14.423956902143 -85.0860959535712 2691992.40412328 T 25 CATAB v2.0f-lin.ifort 2020-Aug-25 09:03:08 2020-Aug-25 09:03

Alternate Designations
 1996 FF4 = 2001 FL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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