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28353 Chrisnielsen (1999 FH32)
Classification: Main-belt Asteroid          SPK-ID: 2028353
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1880081218416668 1.3585e-08  
a 2.243477043597434 4.737e-09 au
q 1.821685138235786 3.0826e-08 au
i 3.473917278728729 4.6079e-07 deg
node 217.4225046341002 1.8935e-05 deg
peri 91.02710192735492 2.0327e-05 deg
M 77.74434112981052 5.1187e-06 deg
tp 2458935.438190531074
(2020-Mar-26.93819053)
1.7203e-05 TDB
period 1227.385170703113
3.36
3.8873e-06
1.064e-08
d
yr
n .2933064604273917 9.2895e-10 deg/d
Q 2.665268948959084 5.6276e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2484  
   data-arc span      12640 days (34.61 yr)  
   first obs. used      1986-07-29  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:54:45  

Additional Information
 Earth MOID = .809199 au 
 Jupiter MOID = 2.59154 au 
 T_jup = 3.607 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457206.5 (2015-Jul-03.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876738176160433 1.3579e-08  
q 1.823475550532808 3.0823e-08 au
tp 2457707.981351760420
(2016-Nov-15.48135176)
1.662e-05 TDB
node 217.4845634696163 1.8945e-05 deg
peri 90.95207253079106 2.0337e-05 deg
i 3.471729972233531 4.6074e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2484  
   data-arc span      12640 days (34.61 yr)  
   first obs. used      1986-07-29  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:54:45  

Additional Information
 Jupiter MOID = 2.59154 au 
 T_jup = 3.607 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.843963909549781E-16 -4.152343614349158E-16 -1.118768606052288E-13 -7.890384209153092E-14 5.506270487087508E-14 4.303631901077073E-17
q -4.152343614349158E-16 9.500360004650511E-16 2.543994455156826E-13 1.710765745041259E-13 -1.183183533461378E-13 -1.189020805828122E-16
tp -1.118768606052288E-13 2.543994455156826E-13 2.762195947670021E-10 -8.1432257987695E-11 1.463215054769195E-10 -9.553956263606466E-14
node -7.890384209153092E-14 1.710765745041259E-13 -8.1432257987695E-11 3.58922235693853E-10 -3.782773781141874E-10 1.934960938739829E-12
peri 5.506270487087508E-14 -1.183183533461378E-13 1.463215054769195E-10 -3.782773781141874E-10 4.135835790155268E-10 -1.875040351248531E-12
i 4.303631901077073E-17 -1.189020805828122E-16 -9.553956263606466E-14 1.934960938739829E-12 -1.875040351248531E-12 2.122852080362131E-13

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 14.43   n/a MPCxxxxx  
diameter diameter 3.254 km 0.482 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.499 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.349   0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

28353 Chrisnielsen           Discovered 1999 Mar. 19 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Christopher Stephen Nielsen (b. 1993) was awarded first place in the 2011 Intel International Science and Engineering Fair for his electrical and mechanical engineering project. He is home-schooled in Calgary, Alberta, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1999 FH32 = 1986 OE = 2000 UM9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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