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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131115886410945 2.5434e-08  
a 2.457800816302774 8.0293e-09 au
q 2.135544083651691 6.2178e-08 au
i 5.701954598951398 4.4605e-06 deg
node 152.0233610655854 3.0608e-05 deg
peri 101.9265830006436 3.5957e-05 deg
M 148.6343995828427 1.8523e-05 deg
tp 2458419.420859585594
(2018-Oct-27.92085959)
7.2274e-05 TDB
period 1407.40293724935
3.85
6.8967e-06
1.888e-08
d
yr
n .2557902861163481 1.2535e-09 deg/d
Q 2.780057548953856 9.0821e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2686  
   data-arc span      25146 days (68.85 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:52:43  

Additional Information
 Earth MOID = 1.12983 au 
 Jupiter MOID = 2.2749 au 
 T_jup = 3.473 
[ 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 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-August); 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1946-Feb-03 03:35 < 00:01 Hebe 0.0491852811705976 0.0491845292994442 0.0491860333662479 6.74255635019461 6.74255633144907 2431854.649044736 0.357098739062536 321.650063294594 29.3136110601429 -85.8163958101475 250288.404895567 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 03:52:49 2020-Nov-13 03:52
1955-Apr-03 17:49 00:03 Europ 0.0488521528996681 0.0488493416683567 0.048854964157964 2.61969180510697 2.61969172205733 2435201.242303552 3.04229136326128 152.229064503608 39.9522946381655 -23.9975012310604 86224.5281830294 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 03:52:49 2020-Nov-13 03:52

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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