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439 Ohio (A898 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000439
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0660726029676838 1.4914e-08  
a 3.131984656777324 9.9459e-09 au
q 2.925046278049199 4.8626e-08 au
i 19.12930623470302 5.0957e-07 deg
node 201.4509074830235 1.2185e-06 deg
peri 244.4624173792023 1.2793e-05 deg
M 351.7018620212807 1.0541e-05 deg
tp 2459443.166584545475
(2021-Aug-16.66658455)
5.9245e-05 TDB
period 2024.547010360033
5.54
9.6437e-06
2.64e-08
d
yr
n .1778175553137587 8.4702e-10 deg/d
Q 3.33892303550545 1.0603e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3758  
   data-arc span      44716 days (122.43 yr)  
   first obs. used      1898-10-15  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37978  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:37:00  

Additional Information
 Earth MOID = 1.98635 au 
 Jupiter MOID = 1.91374 au 
 T_jup = 3.124 
[ 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 9.88   n/a E2021B10 IRAS observations used: 6
diameter diameter 70.421 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 37.46 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.027   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.720   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.88, mean=8.40, max.=9.48) deg.
U-B UB 0.217   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.88, mean=8.40, max.=9.48) deg.
Tholen spectral type spec_T X:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

439 Ohio (A898 TA)          Discovered 1898-Oct-13 by Coddington, E. F. at Mount Hamilton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A898 TA = 1934 CO1 = 1936 QP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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