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237434 (1999 PH3)
Classification: Main-belt Asteroid          SPK-ID: 2237434
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2916889462902971 8.5649e-08  
a 2.755638076245117 2.736e-08 au
q 1.951848909427757 2.29e-07 au
i 6.021420259678442 6.2846e-06 deg
node 286.1417273515441 7.901e-05 deg
peri 66.22996430399036 7.9703e-05 deg
M 223.9592902684669 1.9598e-05 deg
tp 2459831.890554508414
(2022-Sep-09.39055451)
9.8765e-05 TDB
period 1670.827799058023
4.57
2.4884e-05
6.813e-08
d
yr
n .2154620603050538 3.2089e-09 deg/d
Q 3.559427243062477 3.5341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      301  
   data-arc span      7529 days (20.61 yr)  
   first obs. used      1999-08-10  
   last obs. used      2020-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 01:19:43  

Additional Information
 Earth MOID = .953912 au 
 Jupiter MOID = 1.944 au 
 T_jup = 3.273 
[ show covariance matrix ]

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 16.10   n/a E2021B55  
diameter diameter 5.569 km 0.652 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 35.429 h n/a LCDB (Rev. 2020-October); 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 0.025   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

237434 (1999 PH3)          Discovered 1999-Aug-10 by Pravec, P., Kusnirak, P. at Ondrejov
Reference: 20100428/Numbers.arcLast Updated: 2010-05-03

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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