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13169 (1995 XS1)
Classification: Main-belt Asteroid          SPK-ID: 2013169
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098098899247604 3.3109e-08  
a 2.40624925804923 7.1261e-09 au
q 1.901394366086385 8.0913e-08 au
i 1.426110746941253 3.6041e-06 deg
node 233.4624656139788 0.00015328 deg
peri 173.2623753637435 0.00015355 deg
M 234.8940165027377 9.8195e-06 deg
tp 2459474.288949205959
(2021-Sep-16.78894921)
3.8321e-05 TDB
period 1363.356227625019
3.73
6.0564e-06
1.658e-08
d
yr
n .2640542454756113 1.173e-09 deg/d
Q 2.911104150012075 8.6213e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1671  
   data-arc span      16006 days (43.82 yr)  
   first obs. used      1976-09-24  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49619  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:48:09  

Additional Information
 Earth MOID = .911112 au 
 Jupiter MOID = 2.48029 au 
 T_jup = 3.492 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456441.5 (2013-May-29.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098354043821423 3.3006e-08  
q 1.900680927228116 8.0477e-08 au
tp 2456750.499553597570
(2014-Apr-02.99955360)
3.3457e-05 TDB
node 233.5904097605432 0.00015329 deg
peri 173.4131409538089 0.00015356 deg
i 1.42603969619957 3.6041e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1671  
   data-arc span      16006 days (43.82 yr)  
   first obs. used      1976-09-24  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49619  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:48:09  

Additional Information
 Jupiter MOID = 2.48029 au 
 T_jup = 3.492 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.089378967761469E-15 -2.649745824669543E-15 -4.099609816325165E-13 5.461751261211599E-16 -1.216519731652469E-13 -1.583341723264258E-16
q -2.649745824669543E-15 6.476470007106828E-15 1.027921044173021E-12 -8.207531436199255E-16 3.009846310218785E-13 3.948860461646625E-16
tp -4.099609816325165E-13 1.027921044173021E-12 1.11934252286253E-9 -4.837628921464708E-13 3.216566633971806E-10 1.157209729606062E-13
node 5.461751261211599E-16 -8.207531436199255E-16 -4.837628921464708E-13 2.349709531843768E-8 -2.348947000248731E-8 -1.563907782403353E-10
peri -1.216519731652469E-13 3.009846310218785E-13 3.216566633971806E-10 -2.348947000248731E-8 2.358108518713603E-8 1.563748496916715E-10
i -1.583341723264258E-16 3.948860461646625E-16 1.157209729606062E-13 -1.563907782403353E-10 1.563748496916715E-10 1.298949630301377E-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 14.5   n/a MPO337370  
rotation period rot_per 3.68 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.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

13169 (1995 XS1)          Discovered 1995-Dec-15 by Kobayashi, T. at Oizumi
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1995 XS1 = 1976 SS4 = 1987 RG4 = 1993 FM23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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