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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2918652380364474 6.6608e-08  
a 2.755218052519873 2.2478e-08 au
q 1.951065679778843 1.832e-07 au
i 6.021540461936725 5.3087e-06 deg
node 286.137538283014 7.4772e-05 deg
peri 66.25536766341112 7.5418e-05 deg
M 266.1818848828549 1.7632e-05 deg
tp 2459831.827990865702
(2022-Sep-09.32799087)
8.5955e-05 TDB
period 1670.445803733835
4.57
2.0442e-05
5.597e-08
d
yr
n .2155113318823731 2.6374e-09 deg/d
Q 3.559370425260903 2.9039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      7949 days (21.76 yr)  
   first obs. used      1999-08-10  
   last obs. used      2021-05-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 04:07:06  

Additional Information
 Earth MOID = .954032 au 
 Jupiter MOID = 1.94442 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1933-May-12 20:37 00:03 Jupiter 1.95462237899328 1.95462126536501 1.95462349267699 1.09543881228019 0.577321047863458 2427205.359062150 3.0678512868758 2363.53218637794 976.770427228597 -38.1023959149889 1148369.67605073 T 21 CATAB v2.0g-lin.ifort 2021-Jul-09 04:07:08 2021-Jul-09 04:07
2015-Apr-21 06:44 < 00:01 Jupiter 1.98155792167833 1.98155742025424 1.98155842310219 1.92252353554859 1.68558331604245 2457133.780711760 0.249435257706096 305.875271308786 41.5173998945481 -80.9821713113069 1874998.95788449 T 21 CATAB v2.0g-lin.ifort 2021-Jul-09 04:07:08 2021-Jul-09 04:07
2075-Jan-21 06:12 00:02 Jupiter 1.94130341883983 1.94130282339131 1.94130401430899 1.48280887460025 1.15155953676641 2478958.758476330 2.17398624353792 1139.04925185587 89.2656676408078 -75.8351310426671 2283693.09355554 T 21 CATAB v2.0g-lin.ifort 2021-Jul-09 04:07:08 2021-Jul-09 04:07
2134-Oct-26 08:25 00:04 Jupiter 1.93934682157871 1.9393461767349 1.93934746643309 1.10988310307693 0.598604473573528 2500785.850398167 4.3770553459604 4180.11880406249 626.814703456861 -50.4681453593559 1785527.13084776 T 21 CATAB v2.0g-lin.ifort 2021-Jul-09 04:07:08 2021-Jul-09 04:07
2194-Aug-02 11:09 00:07 Jupiter 1.97557277869285 1.97557125312532 1.97557430435198 0.915888300409055 n/a 2522615.964466423 6.64531037469918 750.111529664355 33.3256403251835 84.7638327604559 8829205.39618312 F 21 CATAB v2.0g-lin.ifort 2021-Jul-09 04:07:08 2021-Jul-09 04:07
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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