Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06571580760296432 9.0828e-09  
a 3.130978945745163 1.1178e-08 au
q 2.925224135737642 2.9717e-08 au
i 19.13170070980636 1.9615e-07 deg
node 201.4539679927263 4.6147e-07 deg
peri 244.5325446890453 8.1124e-06 deg
M 281.1730564041854 6.484e-06 deg
tp 2459443.588863449580
(2021-Aug-17.08886345)
3.6162e-05 TDB
period 2023.571935755202
5.54
1.0837e-05
2.967e-08
d
yr
n .1779032381498447 9.5274e-10 deg/d
Q 3.336733755752684 1.1913e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3601  
   data-arc span      8930 days (24.45 yr)  
   first obs. used      1996-06-05  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38333  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Dec-17 16:55:41  

Additional Information
 Earth MOID = 1.98692 au 
 Jupiter MOID = 1.91606 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 9.8   n/a MPO502157 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-21 06:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin