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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1311158864050001 2.5431e-08  
a 2.457800816299476 8.0224e-09 au
q 2.135544083663438 6.2175e-08 au
i 5.701954594144438 4.4508e-06 deg
node 152.0233610513579 3.0597e-05 deg
peri 101.9265830271859 3.5924e-05 deg
M 148.6343995732661 1.8493e-05 deg
tp 2458419.420859624202
(2018-Oct-27.92085962)		 7.2149e-05 TDB
period 1407.402937246518
3.85		 6.8907e-06
1.887e-08		 d
yr
n .2557902861168629 1.2524e-09 deg/d
Q 2.780057548935515 9.0742e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2694  
   data-arc span      25148 days (68.85 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:16:53  

Additional Information
 Earth MOID = 1.12983 au 
 Jupiter MOID = 2.2749 au 
 T_jup = 3.473 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456791.5 (2014-May-14.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1307288726604251 2.5398e-08  
q 2.136351058865938 6.2082e-08 au
tp 2457013.076384218648
(2014-Dec-21.57638422)		 7.2667e-05 TDB
node 152.0690975744798 3.0593e-05 deg
peri 102.185188227395 3.5964e-05 deg
i 5.702224032728571 4.4516e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2694  
   data-arc span      25148 days (68.85 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:16:53  

Additional Information
 Jupiter MOID = 2.2749 au 
 T_jup = 3.473 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.450798447698059E-16 -1.566795944674953E-15 -1.918227537990029E-14 1.39659883864191E-15 -7.374111484016431E-15 4.524391118981758E-16
q -1.566795944674953E-15 3.854228764669934E-15 7.80230044474508E-15 -2.981321653835686E-15 4.495903746372487E-15 -9.033069836354306E-16
tp -1.918227537990029E-14 7.80230044474508E-15 5.28043465213696E-9 -1.892844031684662E-11 1.381404294556441E-9 -6.827414331666538E-13
node 1.39659883864191E-15 -2.981321653835686E-15 -1.892844031684662E-11 9.359362952672198E-10 -9.355684619542287E-10 2.645112650855758E-11
peri -7.374111484016431E-15 4.495903746372487E-15 1.381404294556441E-9 -9.355684619542287E-10 1.293404346765864E-9 -2.65071518877197E-11
i 4.524391118981758E-16 -9.033069836354306E-16 -6.827414331666538E-13 2.645112650855758E-11 -2.65071518877197E-11 1.981674625256268E-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. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2016) Minor Planet Bull. 43, 52-56.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 224-230.]
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

[ hide close-approach data ]
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 44 CATAB v2.0f-lin.ifort 2020-Dec-18 02:17:00 2020-Dec-18 02:17
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 44 CATAB v2.0f-lin.ifort 2020-Dec-18 02:17:00 2020-Dec-18 02:17

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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