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4302 Markeev (1968 HP)
Classification: Main-belt Asteroid          SPK-ID: 2004302
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1313495632801812 2.5681e-08  
a 2.457608159547578 8.213e-09 au
q 2.134802401077194 6.2945e-08 au
i 5.702101909887459 4.582e-06 deg
node 152.027651345817 3.0816e-05 deg
peri 101.8854954650023 3.6354e-05 deg
M 46.32643478877633 1.8746e-05 deg
tp 2458419.410293292227
(2018-Oct-27.91029329)
7.3269e-05 TDB
period 1407.237459822672
3.85
7.0542e-06
1.931e-08
d
yr
n .2558203645640332 1.2824e-09 deg/d
Q 2.780413918017962 9.2918e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2497  
   data-arc span      24807 days (67.92 yr)  
   first obs. used      1951-12-27  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46879  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:01:07  

Additional Information
 Earth MOID = 1.12881 au 
 Jupiter MOID = 2.27465 au 
 T_jup = 3.473 
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Orbital Elements at Epoch 2456665.5 (2014-Jan-08.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306720453027187 2.5657e-08  
q 2.136777516334233 6.2786e-08 au
tp 2457012.909615677283
(2014-Dec-21.40961568)
7.4173e-05 TDB
node 152.068335798352 3.0812e-05 deg
peri 102.1199188387647 3.6415e-05 deg
i 5.701863424762528 4.5823e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2497  
   data-arc span      24807 days (67.92 yr)  
   first obs. used      1951-12-27  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46879  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:01:07  

Additional Information
 Jupiter MOID = 2.27465 au 
 T_jup = 3.473 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.582693844159268E-16 -1.600533494405244E-15 -1.148310098220132E-14 1.371788363539082E-15 -4.289005272873921E-15 4.609027323615176E-16
q -1.600533494405244E-15 3.942104696638814E-15 -2.788662539432279E-14 -3.053376837597732E-15 -8.064098139153159E-15 -9.196435026537654E-16
tp -1.148310098220132E-14 -2.788662539432279E-14 5.501675380890306E-9 -2.099722564320754E-11 1.446849965640364E-9 -5.74633065093685E-13
node 1.371788363539082E-15 -3.053376837597732E-15 -2.099722564320754E-11 9.494061004083565E-10 -9.495135791736681E-10 2.612489855029731E-11
peri -4.289005272873921E-15 -8.064098139153159E-15 1.446849965640364E-9 -9.495135791736681E-10 1.326082834534744E-9 -2.615603237586357E-11
i 4.609027323615176E-16 -9.196435026537654E-16 -5.74633065093685E-13 2.612489855029731E-11 -2.615603237586357E-11 2.09975887812624E-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 12.7   n/a MPO347557  
diameter diameter 7.450 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.134 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2016) Minor Planet Bull. 43, 52-56.]
geometric albedo albedo 0.265   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4302 Markeev (1968 HP)          Discovered 1968-Apr-22 by Smirnova, T. M. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1968 HP = 1960 DA = 1976 KK = 1996 TZ67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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