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15645 (4163 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2015645
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01428624891168827 4.4036e-08  
a 3.008830003787156 1.7668e-08 au
q 2.965845109420096 1.3197e-07 au
i 3.867086132322921 3.7114e-06 deg
node 228.3325493744523 7.2463e-05 deg
peri 87.55444272937108 0.00017372 deg
M 238.9431725243148 0.00016085 deg
tp 2459841.534924412521
(2022-Sep-19.03492441)		 0.00085375 TDB
period 1906.316046774473
5.22		 1.6791e-05
4.597e-08		 d
yr
n .1888459159797388 1.6634e-09 deg/d
Q 3.051814898154214 1.7921e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1255  
   data-arc span      22030 days (60.31 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53782  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:11:19  

Additional Information
 Earth MOID = 1.95288 au 
 Jupiter MOID = 1.97402 au 
 T_jup = 3.247 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457159.5 (2015-May-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01264912955255985 4.3059e-08  
q 2.973221918175438 1.2903e-07 au
tp 2457903.016191609189
(2017-May-29.51619161)		 0.00097951 TDB
node 228.3946439038701 7.2524e-05 deg
peri 81.41670245836727 0.00019633 deg
i 3.86409340495738 3.7094e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1255  
   data-arc span      22030 days (60.31 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53782  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:11:19  

Additional Information
 Jupiter MOID = 1.97402 au 
 T_jup = 3.247 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.854118717523112E-15 -5.505182771364723E-15 9.577468406755183E-12 -7.576645248122928E-16 1.779519331751892E-12 1.322483984927877E-15
q -5.505182771364723E-15 1.664960129806876E-14 -2.283349333366752E-11 2.363704807767616E-15 -4.261391136074505E-12 -3.834254984253774E-15
tp 9.577468406755183E-12 -2.283349333366752E-11 9.594466314036325E-7 1.095405587582685E-10 1.787440838037202E-7 8.261689730122763E-12
node -7.576645248122928E-16 2.363704807767616E-15 1.095405587582685E-10 5.259740174216167E-9 -5.226888465890778E-9 -2.207231481041497E-11
peri 1.779519331751892E-12 -4.261391136074505E-12 1.787440838037202E-7 -5.226888465890778E-9 3.854556089895897E-8 2.357813218860134E-11
i 1.322483984927877E-15 -3.834254984253774E-15 8.261689730122763E-12 -2.207231481041497E-11 2.357813218860134E-11 1.37592904525005E-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 14.26   n/a E2021B10  
diameter diameter 4.010 km 1.296 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.638 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.252   0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15645 (4163 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
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
1939-Dec-23 07:28 00:02 Jupiter 1.98274204766364 1.98274157556723 1.98274251976072 3.71371209044933 3.59684061646312 2429620.810898039 1.94313681984876 107.686699522362 15.6565545080336 -83.4424988065121 3668626.62373234 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 19:11:23 2021-Feb-24 19:11
2023-Dec-25 15:10 < 00:01 Jupiter 1.97624361794362 1.97624326045631 1.97624397543082 3.76579799296435 3.65020957871566 2460304.131868207 0.298817443589573 41.3852403181397 14.5840990100898 -89.4554914924741 4076625.0997141 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 19:11:23 2021-Feb-24 19:11
2070-Aug-02 17:33 00:02 Jupiter 1.97782649009786 1.97782609080401 1.97782688939181 3.73419601102822 3.61769281752224 2477326.231040887 1.49570508291104 87.6280526450515 15.9382537880954 -86.9733282814474 3754321.96373033 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 19:11:23 2021-Feb-24 19:11
2154-Aug-05 02:35 00:04 Jupiter 1.98056910043662 1.98056860944672 1.98056959142933 3.78052847263114 3.66565997837351 2508008.607636027 3.63549917015929 174.432224480347 14.6281488645399 84.9528771511526 4221680.05724785 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 19:11:23 2021-Feb-24 19:11

Alternate Designations
 4163 P-L = 2000 GF106 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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