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101104 (1998 RC42)
Classification: Main-belt Asteroid          SPK-ID: 2101104
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1274438374552876 4.9929e-08  
a 2.698642825561591 1.4302e-08 au
q 2.354717427950841 1.394e-07 au
i 3.448091340859734 3.9616e-06 deg
node 242.3428811450075 7.8342e-05 deg
peri 133.2446875510183 8.0414e-05 deg
M 306.7976482439998 1.5628e-05 deg
tp 2459239.801195579559
(2021-Jan-25.30119558)
7.0323e-05 TDB
period 1619.259817756559
4.43
1.2873e-05
3.524e-08
d
yr
n .222323802549964 1.7674e-09 deg/d
Q 3.04256822317234 1.6125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      8093 days (22.16 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:24  

Additional Information
 Earth MOID = 1.35767 au 
 Jupiter MOID = 2.43104 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457877.5 (2017-May-04.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296479949632515 5.0127e-08  
q 2.346982165527666 1.4034e-07 au
tp 2457622.255287428330
(2016-Aug-21.75528743)
6.9254e-05 TDB
node 242.3797668677539 7.8242e-05 deg
peri 133.4414423730356 8.0228e-05 deg
i 3.451045229993355 3.969e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      8093 days (22.16 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:24  

Additional Information
 Jupiter MOID = 2.43104 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.512666080315543E-15 -7.010546732271344E-15 3.969403651102577E-13 -3.143181975497781E-15 1.769322442790467E-13 -3.343738845124117E-15
q -7.010546732271344E-15 1.969439049561801E-14 -1.215561378670497E-12 8.432218148735863E-15 -5.148654417741198E-13 9.530338833567966E-15
tp 3.969403651102577E-13 -1.215561378670497E-12 4.796127582782699E-9 -2.600088790689396E-11 1.250806161720991E-9 2.487464167159218E-12
node -3.143181975497781E-15 8.432218148735863E-15 -2.600088790689396E-11 6.121862128282527E-9 -6.117346741236131E-9 -1.035621769278145E-10
peri 1.769322442790467E-13 -5.148654417741198E-13 1.250806161720991E-9 -6.117346741236131E-9 6.436518515681217E-9 1.039063831655912E-10
i -3.343738845124117E-15 9.530338833567966E-15 2.487464167159218E-12 -1.035621769278145E-10 1.039063831655912E-10 1.575258762183331E-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 15.9   n/a MPO436471  
diameter diameter 4.416 km 1.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.80 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.043   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101104 (1998 RC42)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 RC42 = 2003 YA55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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