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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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1311158870218198 2.5445e-08  
a 2.457800817346643 8.077e-09 au
q 2.135544083057284 6.2189e-08 au
i 5.70195503960715 4.532e-06 deg
node 152.0233619996489 3.0659e-05 deg
peri 101.9265779694809 3.6174e-05 deg
M 148.6344029718729 1.8749e-05 deg
tp 2458419.420845966149
(2018-Oct-27.92084597)
7.3208e-05 TDB
period 1407.402938145972
3.85
6.9377e-06
1.899e-08
d
yr
n .2557902859533905 1.2609e-09 deg/d
Q 2.780057551636002 9.136e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      24868 days (68.08 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:09:29  

Additional Information
 Earth MOID = 1.12983 au 
 Jupiter MOID = 2.2749 au 
 T_jup = 3.473 
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Orbital Elements at Epoch 2456746.5 (2014-Mar-30.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1307175267213899 2.5413e-08  
q 2.136453498501556 6.2085e-08 au
tp 2457013.026722537002
(2014-Dec-21.52672254)
7.3882e-05 TDB
node 152.0687027230192 3.0655e-05 deg
peri 102.1668881322116 3.6216e-05 deg
i 5.702138654728386 4.5328e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      24868 days (68.08 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:09:29  

Additional Information
 Jupiter MOID = 2.2749 au 
 T_jup = 3.473 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.458069759076726E-16 -1.567608237277303E-15 -2.985640538654181E-14 1.393017666684517E-15 -1.037489895740304E-14 4.508433074463804E-16
q -1.567608237277303E-15 3.854574546339608E-15 2.306510274660176E-14 -2.971170167753594E-15 8.738518420090367E-15 -8.829969983406312E-16
tp -2.985640538654181E-14 2.306510274660176E-14 5.458503313548421E-9 -1.96182904286537E-11 1.432071785041448E-9 -8.831430258040681E-13
node 1.393017666684517E-15 -2.971170167753594E-15 -1.96182904286537E-11 9.397514450171517E-10 -9.395540039936865E-10 2.808467260183873E-11
peri -1.037489895740304E-14 8.738518420090367E-15 1.432071785041448E-9 -9.395540039936865E-10 1.311594172756886E-9 -2.818767945810488E-11
i 4.508433074463804E-16 -8.829969983406312E-16 -8.831430258040681E-13 2.808467260183873E-11 -2.818767945810488E-11 2.054587251369055E-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-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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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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