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168546 (1999 VA189)
Classification: Main-belt Asteroid          SPK-ID: 2168546
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822769769479864 4.1807e-08  
a 2.449533332038512 1.075e-08 au
q 2.003039801341203 1.0413e-07 au
i 4.229184184609653 3.4397e-06 deg
node 102.7928660078252 6.8433e-05 deg
peri 290.031435557981 6.9257e-05 deg
M 246.4074124669413 1.1722e-05 deg
tp 2459838.346021484449
(2022-Sep-15.84602148)
4.6678e-05 TDB
period 1400.307636166041
3.83
9.2181e-06
2.524e-08
d
yr
n .2570863649545315 1.6924e-09 deg/d
Q 2.89602686273582 1.2709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7958 days (21.79 yr)  
   first obs. used      1999-10-21  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 03:02:15  

Additional Information
 Earth MOID = 1.01334 au 
 Jupiter MOID = 2.54392 au 
 T_jup = 3.470 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457444.5 (2016-Feb-26.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804585344149942 4.1629e-08  
q 2.009311768509309 1.0341e-07 au
tp 2457035.845228702004
(2015-Jan-13.34522870)
4.4017e-05 TDB
node 102.8886923531296 6.8419e-05 deg
peri 289.8825325735247 6.9275e-05 deg
i 4.228414965538796 3.4406e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7958 days (21.79 yr)  
   first obs. used      1999-10-21  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 03:02:15  

Additional Information
 Jupiter MOID = 2.54392 au 
 T_jup = 3.470 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.732981236505413E-15 -4.289268355370218E-15 -9.014906523670771E-13 -2.736467434189772E-14 -2.430503993240551E-13 -2.816655266697386E-15
q -4.289268355370218E-15 1.06936899370305E-14 2.200450750167456E-12 6.989068938026581E-14 5.959055823487886E-13 7.063043845947332E-15
tp -9.014906523670771E-13 2.200450750167456E-12 1.937509913889618E-9 2.775049365166681E-11 5.14484283150481E-10 2.247330435430845E-12
node -2.736467434189772E-14 6.989068938026581E-14 2.775049365166681E-11 4.681093640453874E-9 -4.660002664562052E-9 6.62693804615167E-11
peri -2.430503993240551E-13 5.959055823487886E-13 5.14484283150481E-10 -4.660002664562052E-9 4.799040955996257E-9 -6.544779204371685E-11
i -2.816655266697386E-15 7.063043845947332E-15 2.247330435430845E-12 6.62693804615167E-11 -6.544779204371685E-11 1.183768850889778E-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 16.06   n/a E2021B55  
rotation period rot_per 3.85304 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

168546 (1999 VA189)          Discovered 1999-Nov-15 by LINEAR at Socorro
Reference: 20071124/Numbers.arcLast Updated: 2007-11-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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