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2165 Young (1956 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2002165
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1763105093686181 3.3614e-08  
a 3.125695648022775 1.3786e-08 au
q 2.574602656188607 1.0413e-07 au
i .9425842696021274 4.0887e-06 deg
node 19.13167828559959 0.00022051 deg
peri 23.95855837753615 0.00022078 deg
M 154.9153854498172 1.2177e-05 deg
tp 2458331.918629792836
(2018-Aug-01.41862979)
6.5951e-05 TDB
period 2018.452152874581
5.53
1.3353e-05
3.656e-08
d
yr
n .1783544878620509 1.1799e-09 deg/d
Q 3.676788639856943 1.6216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2917  
   data-arc span      33327 days (91.24 yr)  
   first obs. used      1929-10-27  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:00:49  

Additional Information
 Earth MOID = 1.58251 au 
 Jupiter MOID = 1.73404 au 
 T_jup = 3.190 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456818.5 (2014-Jun-10.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754240857969901 3.3584e-08  
q 2.579644887424069 1.0423e-07 au
tp 2456315.958904720758
(2013-Jan-23.45890472)
6.2881e-05 TDB
node 19.1643502528947 0.00022046 deg
peri 24.68762201040979 0.00022074 deg
i .9428458262268976 4.0858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2917  
   data-arc span      33327 days (91.24 yr)  
   first obs. used      1929-10-27  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:00:49  

Additional Information
 Jupiter MOID = 1.73404 au 
 T_jup = 3.190 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.127877540509404E-15 -3.48006176069565E-15 -2.281457296835485E-13 2.540601480029475E-15 -6.123378256546391E-14 -1.243386583832205E-17
q -3.48006176069565E-15 1.086299114146857E-14 8.137690976366055E-13 -1.028418734181405E-14 2.132152622383377E-13 5.032440541888229E-17
tp -2.281457296835485E-13 8.137690976366055E-13 3.953996487058695E-9 -6.763105176725672E-12 7.179181878728029E-10 -9.38642621873424E-14
node 2.540601480029475E-15 -1.028418734181405E-14 -6.763105176725672E-12 4.860098393057074E-8 -4.859538248369988E-8 -1.386311001672182E-10
peri -6.123378256546391E-14 2.132152622383377E-13 7.179181878728029E-10 -4.859538248369988E-8 4.872565013978359E-8 1.385976774993079E-10
i -1.243386583832205E-17 5.032440541888229E-17 -9.38642621873424E-14 -1.386311001672182E-10 1.385976774993079E-10 1.669416625313598E-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 11.43   n/a E2021B10  
diameter diameter 27.115 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.389 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.073   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2165 Young (1956 RJ)          Discovered 1956-Sep-07 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1956 RJ = 1929 UD = 1942 DD = 1956 SF = 1973 QT = 1973 UN3 = 1976 GU5 = 1978 QA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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