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120416 (6123 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2120416
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .232150287866148 4.9723e-08  
a 2.417982839211428 8.3137e-09 au
q 1.856647427033089 1.2274e-07 au
i 12.73758083248168 4.7974e-06 deg
node 181.3596976528034 1.5918e-05 deg
peri 191.9644145507743 1.8189e-05 deg
M 308.3141835127035 8.9752e-06 deg
tp 2459197.672856754327
(2020-Dec-14.17285675)
3.4476e-05 TDB
period 1373.340565278754
3.76
7.0829e-06
1.939e-08
d
yr
n .262134541934927 1.3519e-09 deg/d
Q 2.979318251389767 1.0244e-08 au
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      21966 days (60.14 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:46:45  

Additional Information
 Earth MOID = .858215 au 
 Jupiter MOID = 2.48492 au 
 T_jup = 3.445 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458130.5 (2018-Jan-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2331479341400553 4.9659e-08  
q 1.853061060957298 1.226e-07 au
tp 2457825.880207822244
(2017-Mar-13.38020782)
3.3289e-05 TDB
node 181.428272679969 1.5915e-05 deg
peri 192.0827401711107 1.8162e-05 deg
i 12.74382386652086 4.7979e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      21966 days (60.14 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47952  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:46:45  

Additional Information
 Jupiter MOID = 2.48492 au 
 T_jup = 3.445 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.466016631570811E-15 -6.081032995457178E-15 -8.014982471967288E-13 -2.187424129048807E-14 -1.07919533952829E-13 -9.684627926469795E-15
q -6.081032995457178E-15 1.503024888138074E-14 1.943503262789745E-12 5.399042391854195E-14 2.594666627999479E-13 2.396806736416998E-14
tp -8.014982471967288E-13 1.943503262789745E-12 1.108145185174197E-9 1.221357643553189E-11 2.910484303202231E-10 6.218396088700317E-12
node -2.187424129048807E-14 5.399042391854195E-14 1.221357643553189E-11 2.532760914835184E-10 -2.439565555335426E-10 -2.760156802671555E-11
peri -1.07919533952829E-13 2.594666627999479E-13 2.910484303202231E-10 -2.439565555335426E-10 3.29867203667939E-10 2.850328390967477E-11
i -9.684627926469795E-15 2.396806736416998E-14 6.218396088700317E-12 -2.760156802671555E-11 2.850328390967477E-11 2.302031883438732E-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 16.2   n/a MPO280590  
diameter diameter 1.626 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.266   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120416 (6123 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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