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17915 (1999 GU)
Classification: Main-belt Asteroid          SPK-ID: 2017915
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04388673456172258 4.4352e-08  
a 2.230333502952935 6.1562e-09 au
q 2.132451448524723 9.7442e-08 au
i .8887047880343383 4.5607e-06 deg
node 10.36809760377629 0.00017928 deg
peri 173.5521415440163 0.0001824 deg
M 256.8666130367258 3.4799e-05 deg
tp 2459745.037826724046
(2022-Jun-14.53782672)
0.00011806 TDB
period 1216.614922821623
3.33
5.0372e-06
1.379e-08
d
yr
n .2959029954729418 1.2251e-09 deg/d
Q 2.328215557381148 6.4264e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      10578 days (28.96 yr)  
   first obs. used      1992-02-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:56:03  

Additional Information
 Earth MOID = 1.13427 au 
 Jupiter MOID = 2.6265 au 
 T_jup = 3.641 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457570.5 (2016-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04315635278346754 4.4355e-08  
q 2.134093123006735 9.7335e-08 au
tp 2457310.394261268869
(2015-Oct-14.89426127)
0.00011731 TDB
node 10.44320122894535 0.00017917 deg
peri 173.1851366334837 0.00018241 deg
i .8891583801511382 4.561e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      10578 days (28.96 yr)  
   first obs. used      1992-02-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:56:03  

Additional Information
 Jupiter MOID = 2.6265 au 
 T_jup = 3.641 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.967392399765436E-15 -4.309986111140852E-15 8.873776876114875E-13 7.943214513935364E-15 2.596274432777702E-13 1.13882479031675E-16
q -4.309986111140852E-15 9.474181922181511E-15 -1.80799307535048E-12 -1.834344611194618E-14 -5.2716570920561E-13 -2.236801852510804E-16
tp 8.873776876114875E-13 -1.80799307535048E-12 1.376266107340162E-8 -2.52197477925616E-12 4.023073599342182E-9 4.737116496192432E-13
node 7.943214513935364E-15 -1.834344611194618E-14 -2.52197477925616E-12 3.210052005050859E-8 -3.209703025088465E-8 -1.642948321649559E-12
peri 2.596274432777702E-13 -5.2716570920561E-13 4.023073599342182E-9 -3.209703025088465E-8 3.327412101933482E-8 1.78064490917992E-12
i 1.13882479031675E-16 -2.236801852510804E-16 4.737116496192432E-13 -1.642948321649559E-12 1.78064490917992E-12 2.08026269197127E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.68   n/a E2021B10  
diameter diameter 1.951 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.580 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:
[Warner, B.D. (2018) Minor Planet Bull. 45, 190-195.]
geometric albedo albedo 0.293   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17915 (1999 GU)          Discovered 1999-Apr-05 by Korlevic, K. at Visnjan
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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