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4451 Grieve (1988 JJ)
Classification: Mars-crossing Asteroid          SPK-ID: 2004451
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3836635999072303 3.789e-08  
a 2.604523566618013 1.1557e-08 au
q 1.605262679006127 9.5335e-08 au
i 27.79664918180565 5.4267e-06 deg
node 219.3571249050145 8.9071e-06 deg
peri 110.2485384450384 1.2189e-05 deg
M 175.8119091404705 1.1737e-05 deg
tp 2458250.715163296300
(2018-May-12.21516330)
4.6356e-05 TDB
period 1535.29156547449
4.20
1.0219e-05
2.798e-08
d
yr
n .2344831484101459 1.5607e-09 deg/d
Q 3.603784454229899 1.5991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      24136 days (66.08 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37217  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:51:28  

Additional Information
 Earth MOID = .770958 au 
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
[ 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 12.1   n/a MPO502196  
rotation period rot_per 6.864 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Sheridan, E.E. (2002) Minor Planet Bull. 29, 32-33.]
[Stephens, R.D. (2002) Minor Planet Bull. 29, 34.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
SMASSII spectral type spec_B S   n/a Binzel et al. (2004) Icarus 170, 259-294  

4451 Grieve (1988 JJ)          Discovered 1988-May-09 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1988 JJ = 1971 GF = 1980 VE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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