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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3836635993431726 3.7901e-08  
a 2.604523566565199 1.1559e-08 au
q 1.605262680442678 9.5362e-08 au
i 27.79664851689441 5.4786e-06 deg
node 219.3571245494254 8.9162e-06 deg
peri 110.2485381770713 1.2238e-05 deg
M 175.8119096173348 1.177e-05 deg
tp 2458250.715161285424
(2018-May-12.21516129)
4.6499e-05 TDB
period 1535.291565427792
4.20
1.0221e-05
2.798e-08
d
yr
n .234483148417278 1.561e-09 deg/d
Q 3.603784452687721 1.5994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1859  
   data-arc span      24080 days (65.93 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:07:53  

Additional Information
 Earth MOID = .770958 au 
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457040.5 (2015-Jan-18.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3855230680201955 3.813e-08  
q 1.599560014201427 9.6024e-08 au
tp 2456714.393465433277
(2014-Feb-25.89346543)
3.9096e-05 TDB
node 219.5357745508367 8.9354e-06 deg
peri 109.9822648579612 1.2156e-05 deg
i 27.75535348958282 5.4785e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1859  
   data-arc span      24080 days (65.93 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:07:53  

Additional Information
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.453906923558944E-15 -3.653825056746192E-15 6.518557707051282E-13 1.442410565667773E-15 1.138437315976277E-13 -2.006239207309221E-16
q -3.653825056746192E-15 9.220535275766394E-15 -1.529748112405049E-12 -2.294143949267316E-15 -2.632380915997862E-13 8.382284090606871E-16
tp 6.518557707051282E-13 -1.529748112405049E-12 1.528507908773344E-9 3.400577111858747E-12 3.36004543813499E-10 1.304226800533771E-12
node 1.442410565667773E-15 -2.294143949267316E-15 3.400577111858747E-12 7.984078884618698E-11 -6.953813605111385E-11 5.731148946968862E-12
peri 1.138437315976277E-13 -2.632380915997862E-13 3.36004543813499E-10 -6.953813605111385E-11 1.47765924829775E-10 -5.146622057450117E-12
i -2.006239207309221E-16 8.382284090606871E-16 1.304226800533771E-12 5.731148946968862E-12 -5.146622057450117E-12 3.001379639604904E-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 12.1   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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