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101997 (1999 RU75)
Classification: Main-belt Asteroid          SPK-ID: 2101997
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1019405637083067 4.6857e-08  
a 2.384966216300664 1.0943e-08 au
q 2.141841415785707 1.1157e-07 au
i 4.774395146026391 5.5239e-06 deg
node 219.7207299536421 3.9775e-05 deg
peri 198.0165127026131 4.4895e-05 deg
M 222.664903573873 2.2026e-05 deg
tp 2459713.716735854536
(2022-May-14.21673585)
8.4068e-05 TDB
period 1345.308152945558
3.68
9.2592e-06
2.535e-08
d
yr
n .2675966834897852 1.8418e-09 deg/d
Q 2.628091016815621 1.2059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      7672 days (21.00 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:49  

Additional Information
 Earth MOID = 1.15346 au 
 Jupiter MOID = 2.65816 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457179.5 (2015-Jun-06.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1013078530876214 4.6592e-08  
q 2.143103900025398 1.1058e-07 au
tp 2457025.208117098903
(2015-Jan-02.70811710)
7.7308e-05 TDB
node 219.798116919917 3.9816e-05 deg
peri 198.3803876960908 4.5033e-05 deg
i 4.771403176953653 5.5217e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      7672 days (21.00 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:49  

Additional Information
 Jupiter MOID = 2.65816 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.170828819110656E-15 -5.131605536756724E-15 -1.511995390979995E-12 9.559702409327001E-15 -4.343443253483425E-13 -3.336834753935786E-16
q -5.131605536756724E-15 1.222779859523318E-14 3.823608765601575E-12 -2.337241286144822E-14 1.093252220126029E-12 9.646666799946623E-16
tp -1.511995390979995E-12 3.823608765601575E-12 5.976581370076669E-9 -1.506045916548381E-11 1.632839521351565E-9 1.213150339867212E-12
node 9.559702409327001E-15 -2.337241286144822E-14 -1.506045916548381E-11 1.58532812049283E-9 -1.583473130905899E-9 -3.314333850094531E-11
peri -4.343443253483425E-13 1.093252220126029E-12 1.632839521351565E-9 -1.583473130905899E-9 2.027938914705766E-9 3.333908143122404E-11
i -3.336834753935786E-16 9.646666799946623E-16 1.213150339867212E-12 -3.314333850094531E-11 3.333908143122404E-11 3.04889979494124E-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 15.78   n/a E2021B55  

101997 (1999 RU75)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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