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181971 (1999 VM17)
Classification: Main-belt Asteroid          SPK-ID: 2181971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2232792767804311 6.7982e-08  
a 2.317891328925136 6.3015e-09 au
q 1.8003542293471 1.6077e-07 au
i 1.304762383487179 4.7592e-06 deg
node 313.2336291313639 0.00017819 deg
peri 64.19407128859558 0.00017889 deg
M 5.562766861487373 1.3185e-05 deg
tp 2459180.582886826099
(2020-Nov-27.08288683)
4.7159e-05 TDB
period 1288.95582380874
3.53
5.2563e-06
1.439e-08
d
yr
n .2792958403618789 1.139e-09 deg/d
Q 2.835428428503172 7.7085e-09 au
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      7762 days (21.25 yr)  
   first obs. used      1999-10-06  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:50  

Additional Information
 Earth MOID = .801153 au 
 Jupiter MOID = 2.6328 au 
 T_jup = 3.546 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457595.5 (2016-Jul-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .22456838795083 6.7699e-08  
q 1.796968584071825 1.602e-07 au
tp 2457892.112816915783
(2017-May-18.61281692)
4.3526e-05 TDB
node 313.308272879574 0.00017834 deg
peri 64.28683384069726 0.00017902 deg
i 1.304363774675936 4.7587e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      7762 days (21.25 yr)  
   first obs. used      1999-10-06  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:50  

Additional Information
 Jupiter MOID = 2.6328 au 
 T_jup = 3.546 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.583172918637158E-15 -1.084257959112693E-14 -2.082991845175351E-12 3.817928646961791E-14 -6.574566757443701E-13 -8.018681366324682E-15
q -1.084257959112693E-14 2.566459847984918E-14 4.943688428122088E-12 -9.099509591163803E-14 1.560654362120483E-12 1.899375877017837E-14
tp -2.082991845175351E-12 4.943688428122088E-12 1.89452471064447E-9 -2.671005215993573E-11 6.913825887423943E-10 4.035944443503766E-12
node 3.817928646961791E-14 -9.099509591163803E-14 -2.671005215993573E-11 3.18039672552989E-8 -3.180465508269715E-8 5.994666154560841E-10
peri -6.574566757443701E-13 1.560654362120483E-12 6.913825887423943E-10 -3.180465508269715E-8 3.20494450601906E-8 -5.980952017080415E-10
i -8.018681366324682E-15 1.899375877017837E-14 4.035944443503766E-12 5.994666154560841E-10 -5.980952017080415E-10 2.264564282740742E-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 17.27   n/a E2021B55  

181971 (1999 VM17)          Discovered 1999-Nov-02 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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