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3918 Brel (1988 PE1)
Classification: Main-belt Asteroid          SPK-ID: 2003918
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2087189391954136 3.8361e-08  
a 2.243830498757328 5.7655e-09 au
q 1.775500577322382 8.519e-08 au
i 7.511422524115464 4.0002e-06 deg
node 160.635566584997 2.2352e-05 deg
peri 203.059329301039 2.3444e-05 deg
M 206.3500684817295 8.5431e-06 deg
tp 2459724.478379361306
(2022-May-24.97837936)		 3.0238e-05 TDB
period 1227.675240113206
3.36		 4.7317e-06
1.295e-08		 d
yr
n .2932371593376795 1.1302e-09 deg/d
Q 2.712160420192273 6.9688e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2787  
   data-arc span      32583 days (89.21 yr)  
   first obs. used      1931-11-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:14:12  

Additional Information
 Earth MOID = .773631 au 
 Jupiter MOID = 2.74592 au 
 T_jup = 3.592 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456997.5 (2014-Dec-06.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2091853719591933 3.8518e-08  
q 1.774567575943572 8.5651e-08 au
tp 2457267.220425015065
(2015-Sep-01.72042502)		 2.5826e-05 TDB
node 160.6976610125417 2.2324e-05 deg
peri 202.7213607358703 2.3406e-05 deg
i 7.51540071807365 4.0033e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2787  
   data-arc span      32583 days (89.21 yr)  
   first obs. used      1931-11-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:14:12  

Additional Information
 Jupiter MOID = 2.74592 au 
 T_jup = 3.592 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.483653035303351E-15 -3.294706475968027E-15 7.245353481840345E-14 7.922644712456634E-15 -3.638660007425438E-14 -1.71362438434694E-15
q -3.294706475968027E-15 7.336165946814489E-15 -1.259306641957145E-13 -1.778218978513689E-14 8.813272288585913E-14 3.838206928034882E-15
tp 7.245353481840345E-14 -1.259306641957145E-13 6.669813519029875E-10 5.763207766639609E-14 1.83545351552247E-10 -8.352489895675303E-13
node 7.922644712456634E-15 -1.778218978513689E-14 5.763207766639609E-14 4.983745497622091E-10 -4.938381950075912E-10 6.958884852315758E-12
peri -3.638660007425438E-14 8.813272288585913E-14 1.83545351552247E-10 -4.938381950075912E-10 5.47850997380741E-10 -7.08623469335854E-12
i -1.71362438434694E-15 3.838206928034882E-15 -8.352489895675303E-13 6.958884852315758E-12 -7.08623469335854E-12 1.602678452603724E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.80   n/a E2021B10  
diameter diameter 6.262 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.0980 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2005) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2007) http://www.asu.cas.cz/~ppravec/neo.htm]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.289   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3918 Brel (1988 PE1)          Discovered 1988-Aug-13 by Elst, E. W. and Sause, G. at Haute Provence
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 PE1 = 1931 VF1 = 1951 RX1 = 1968 UN3 = 1971 OK = 1978 TE4 = 1980 DQ4 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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