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101948 (1999 RT26)
Classification: Main-belt Asteroid          SPK-ID: 2101948
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872179663412809 3.3757e-08  
a 2.444807019512025 1.1015e-08 au
q 1.987095221222096 8.5241e-08 au
i 2.43360813413968 5.3089e-06 deg
node 90.8787189865526 0.0001077 deg
peri 283.5479006603971 0.00010914 deg
M 137.4408722352417 1.8639e-05 deg
tp 2458467.436796993738
(2018-Dec-14.93679699)
7.0366e-05 TDB
period 1396.256804553718
3.82
9.4359e-06
2.583e-08
d
yr
n .2578322260102187 1.7424e-09 deg/d
Q 2.902518817801955 1.3077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7534 days (20.63 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:04:13  

Additional Information
 Earth MOID = .989689 au 
 Jupiter MOID = 2.56136 au 
 T_jup = 3.474 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457261.5 (2015-Aug-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866424856493388 3.4302e-08  
q 1.988440506392098 8.6772e-08 au
tp 2457067.602958389384
(2015-Feb-14.10295839)
6.6075e-05 TDB
node 90.96497581231959 0.0001079 deg
peri 282.8348377631758 0.00010934 deg
i 2.433226163137158 5.3081e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7534 days (20.63 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:04:13  

Additional Information
 Jupiter MOID = 2.56136 au 
 T_jup = 3.474 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.176607070967942E-15 -2.961384661033661E-15 -1.367227338288063E-12 4.196144225887407E-15 -3.711624122473209E-13 -7.652605380889564E-16
q -2.961384661033661E-15 7.52939871745664E-15 3.604044906624225E-12 -8.821724791262382E-15 9.764975456577589E-13 2.149406083507635E-15
tp -1.367227338288063E-12 3.604044906624225E-12 4.365872111684133E-9 -1.399568407856911E-11 1.196049066428823E-9 1.869764263835832E-12
node 4.196144225887407E-15 -8.821724791262382E-15 -1.399568407856911E-11 1.164210661832287E-8 -1.163506980648189E-8 3.615771345000596E-10
peri -3.711624122473209E-13 9.764975456577589E-13 1.196049066428823E-9 -1.163506980648189E-8 1.195558370856581E-8 -3.607478668579572E-10
i -7.652605380889564E-16 2.149406083507635E-15 1.869764263835832E-12 3.615771345000596E-10 -3.607478668579572E-10 2.81759882510083E-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 16.4   n/a MPO417515  

101948 (1999 RT26)          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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