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2587 Gardner (1980 OH)
Classification: Main-belt Asteroid          SPK-ID: 2002587
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554012847438715 1.9601e-08  
a 3.165254054973567 1.486e-08 au
q 2.673369508289926 6.183e-08 au
i 2.631620779313672 1.1276e-07 deg
node 87.75081350665155 4.4586e-06 deg
peri 183.5303634360442 5.1758e-06 deg
M 140.4870105497686 7.2861e-06 deg
tp 2458593.815349795032
(2019-Apr-20.31534979)
3.8138e-05 TDB
period 2056.891045962002
5.63
1.4485e-05
3.966e-08
d
yr
n .1750214240597411 1.2325e-09 deg/d
Q 3.657138601657208 1.717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3337  
   data-arc span      24236 days (66.35 yr)  
   first obs. used      1955-03-23  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:22:09  

Additional Information
 Earth MOID = 1.65706 au 
 Jupiter MOID = 1.44621 au 
 T_jup = 3.183 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457292.5 (2015-Sep-27.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1561512278387216 1.9447e-08  
q 2.670845785974017 6.1353e-08 au
tp 2456542.034722768885
(2013-Sep-06.53472277)
3.1667e-05 TDB
node 87.7673397452068 4.4628e-06 deg
peri 184.4099579767132 5.1333e-06 deg
i 2.631320245534401 1.1271e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3337  
   data-arc span      24236 days (66.35 yr)  
   first obs. used      1955-03-23  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:22:09  

Additional Information
 Jupiter MOID = 1.44621 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.781725999178193E-16 -1.167882934394089E-15 4.155531152322104E-13 1.849390308812547E-15 3.396260965648791E-14 -3.028173037974763E-16
q -1.167882934394089E-15 3.764240361166415E-15 -1.224927432591398E-12 -6.723367921950716E-15 -8.658737970508114E-14 9.362861920297201E-16
tp 4.155531152322104E-13 -1.224927432591398E-12 1.002796487272202E-9 3.55716136888873E-11 9.268589755208339E-11 -2.066905062956194E-13
node 1.849390308812547E-15 -6.723367921950716E-15 3.55716136888873E-11 1.991626021155417E-11 -1.386874206353334E-11 -4.500671213965677E-14
peri 3.396260965648791E-14 -8.658737970508114E-14 9.268589755208339E-11 -1.386874206353334E-11 2.63502661207172E-11 3.798351688900048E-14
i -3.028173037974763E-16 9.362861920297201E-16 -2.066905062956194E-13 -4.500671213965677E-14 3.798351688900048E-14 1.270363195742029E-14

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 11.62   n/a E2021B10  
diameter diameter 20.564 km 0.356 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.631 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.115   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2587 Gardner (1980 OH)          Discovered 1980-Jul-17 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 OH = 1977 BF = 1978 EZ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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