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117919 (4537 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117919
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424927637986122 3.8281e-08  
a 2.228339170186674 6.3299e-09 au
q 1.910816963146069 8.5484e-08 au
i 6.443091778848672 4.3032e-06 deg
node .5353598130187045 2.913e-05 deg
peri 53.36828510003697 3.3646e-05 deg
M 300.2203713635329 1.4337e-05 deg
tp 2459202.253501401905
(2020-Dec-18.75350140)
4.8336e-05 TDB
period 1214.983467802589
3.33
5.177e-06
1.417e-08
d
yr
n .2963003279798478 1.2625e-09 deg/d
Q 2.54586137722728 7.2318e-09 au
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      21949 days (60.09 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50387  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:15:22  

Additional Information
 Earth MOID = .929319 au 
 Jupiter MOID = 2.80606 au 
 T_jup = 3.622 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457395.5 (2016-Jan-08.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1435493192186176 3.8495e-08  
q 1.908160757654868 8.6109e-08 au
tp 2457985.950273135558
(2017-Aug-20.45027314)
4.8029e-05 TDB
node .6410505056468613 2.9114e-05 deg
peri 53.01765251191801 3.3529e-05 deg
i 6.445958155512467 4.305e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      21949 days (60.09 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50387  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:15:22  

Additional Information
 Jupiter MOID = 2.80606 au 
 T_jup = 3.622 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.481876973041444E-15 -3.308302740124072E-15 -8.02949233986811E-13 1.125513890732943E-14 -3.140121677922234E-13 8.482827538524702E-17
q -3.308302740124072E-15 7.414756587102126E-15 1.75519241140279E-12 -2.459110725454614E-14 6.845854757994373E-13 1.761609964728559E-18
tp -8.02949233986811E-13 1.75519241140279E-12 2.306752541787796E-9 -2.149560601213946E-11 8.031991360818175E-10 -3.771731283369147E-12
node 1.125513890732943E-14 -2.459110725454614E-14 -2.149560601213946E-11 8.476148905435612E-10 -8.492426763128881E-10 1.058534078326363E-11
peri -3.140121677922234E-13 6.845854757994373E-13 8.031991360818175E-10 -8.492426763128881E-10 1.124196301860685E-9 -1.175451877111364E-11
i 8.482827538524702E-17 1.761609964728559E-18 -3.771731283369147E-12 1.058534078326363E-11 -1.175451877111364E-11 1.853311354130854E-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 16.7   n/a MPO325295  
diameter diameter 1.768 km 0.525 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.594 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.142   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117919 (4537 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

Alternate Designations
 4537 P-L = 1990 TW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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