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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1192018934653963 4.2081e-08  
a 2.692436033484689 1.5649e-08 au
q 2.371492560258853 1.1238e-07 au
i 10.45801037709095 5.1527e-06 deg
node 28.01636475124232 2.114e-05 deg
peri 191.8723760901601 2.9454e-05 deg
M 107.3802268860647 2.3331e-05 deg
tp 2458519.175094050154
(2019-Feb-04.67509405)
0.00010266 TDB
period 1613.676662518132
4.42
1.4069e-05
3.852e-08
d
yr
n .2230930200342753 1.945e-09 deg/d
Q 3.013379506710525 1.7514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      797  
   data-arc span      8988 days (24.61 yr)  
   first obs. used      1996-03-23  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:06:16  

Additional Information
 Earth MOID = 1.36517 au 
 Jupiter MOID = 1.95968 au 
 T_jup = 3.337 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179635717194574 4.218e-08  
q 2.37598852412825 1.1242e-07 au
tp 2456905.183933267797
(2014-Sep-04.68393327)
9.8347e-05 TDB
node 28.08648661250977 2.112e-05 deg
peri 192.0755661411467 2.9539e-05 deg
i 10.46205250538104 5.1535e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      797  
   data-arc span      8988 days (24.61 yr)  
   first obs. used      1996-03-23  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:06:16  

Additional Information
 Jupiter MOID = 1.95968 au 
 T_jup = 3.337 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.77917516305491E-15 -4.707313218431761E-15 -1.364983248899317E-12 -8.778427510600192E-16 -2.958264052359265E-13 7.6716256803856E-16
q -4.707313218431761E-15 1.263913269920498E-14 4.09019911813504E-12 8.900701586667482E-16 8.890368294220669E-13 -1.294673184068693E-15
tp -1.364983248899317E-12 4.09019911813504E-12 9.672066681070667E-9 -1.855207662261937E-12 2.045473684222544E-9 -3.047506080259228E-13
node -8.778427510600192E-16 8.900701586667482E-16 -1.855207662261937E-12 4.460584249283837E-10 -4.38957598334143E-10 -3.587106703127007E-11
peri -2.958264052359265E-13 8.890368294220669E-13 2.045473684222544E-9 -4.38957598334143E-10 8.72554717558263E-10 3.526364059660295E-11
i 7.6716256803856E-16 -1.294673184068693E-15 -3.047506080259228E-13 -3.587106703127007E-11 3.526364059660295E-11 2.655886815849317E-11

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

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