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117870 (2174 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3389920144494113 4.0214e-08  
a 2.602010291351583 1.6487e-08 au
q 1.71994958106821 1.0888e-07 au
i 5.252940729028671 5.2759e-06 deg
node 325.0993092726567 6.9793e-05 deg
peri 311.376999854142 7.0725e-05 deg
M 174.7980733969667 1.5384e-05 deg
tp 2458456.117623383305
(2018-Dec-03.61762338)
6.0372e-05 TDB
period 1533.069846676357
4.20
1.4571e-05
3.989e-08
d
yr
n .2348229604675009 2.2318e-09 deg/d
Q 3.484071001634955 2.2076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      22017 days (60.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:54:38  

Additional Information
 Earth MOID = .707393 au 
 Jupiter MOID = 1.69886 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456862.5 (2014-Jul-24.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3388847972226625 4.0099e-08  
q 1.719796135855494 1.0849e-07 au
tp 2456924.708149836200
(2014-Sep-24.20814984)
5.1519e-05 TDB
node 325.1550920738622 6.979e-05 deg
peri 311.4145880164726 7.0729e-05 deg
i 5.253239527638772 5.2779e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      22017 days (60.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:54:38  

Additional Information
 Jupiter MOID = 1.69886 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.60794107488459E-15 -4.330976307861179E-15 -8.048397872696018E-13 2.011716788236919E-14 -2.010619501300517E-13 7.673904361707743E-16
q -4.330976307861179E-15 1.176932217502076E-14 2.387928833023289E-12 -4.747966194338395E-14 5.836090675683613E-13 -1.002667410864974E-15
tp -8.048397872696018E-13 2.387928833023289E-12 2.65419848193556E-9 -2.493889964541749E-11 6.523069391952867E-10 1.750681872476707E-12
node 2.011716788236919E-14 -4.747966194338395E-14 -2.493889964541749E-11 4.870616800123937E-9 -4.854599630757278E-9 1.343699590985112E-10
peri -2.010619501300517E-13 5.836090675683613E-13 6.523069391952867E-10 -4.854599630757278E-9 5.002530164994239E-9 -1.33363473558337E-10
i 7.673904361707743E-16 -1.002667410864974E-15 1.750681872476707E-12 1.343699590985112E-10 -1.33363473558337E-10 2.785626794318099E-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 15.83   n/a MPCxxxxx  

117870 (2174 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2174 P-L = 2001 DR86 = 2002 TM185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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