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91554 (1999 RZ215)
Classification: TransNeptunian Object          SPK-ID: 2091554
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7008112704224613 2.7736e-05  
a 103.3987182178287 0.01028 au
q 30.93573114353807 0.00022117 au
i 25.46396749682346 4.7087e-05 deg
node 341.5881873354847 3.6219e-05 deg
peri 335.6650386226616 0.00077549 deg
M 7.39668208427029 0.0011885 deg
tp 2451109.980245692807
(1998-Oct-23.48024569)
0.099435 TDB
period 384035.3119395727
1051.43
57.274
0.1568
d
yr
n .0009374137971370857 1.398e-07 deg/d
Q 175.8617052921193 0.017485 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      7387 days (20.22 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .74816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:22  

Additional Information
 Earth MOID = 29.9392 au 
 Jupiter MOID = 25.9623 au 
 T_jup = 5.792 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457167.5 (2015-May-25.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6924275235944409 2.7611e-05  
q 30.94876521382599 0.00022182 au
tp 2451076.864727983131
(1998-Sep-20.36472798)
0.10139 TDB
node 341.6782826901164 3.6021e-05 deg
peri 335.497491464597 0.00078787 deg
i 25.55018558174575 4.7141e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      7387 days (20.22 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .74816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:22  

Additional Information
 Jupiter MOID = 25.9623 au 
 T_jup = 5.792 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.623683570723933E-10 5.727750485665053E-9 2.519203410640543E-6 9.642426973962682E-11 1.880571154435795E-8 2.141831109285571E-10
q 5.727750485665053E-9 4.920346333941429E-8 2.220766063958634E-5 7.298984745742861E-10 1.715302755023325E-7 1.621491311805193E-9
tp 2.519203410640543E-6 2.220766063958634E-5 .01028034540958792 3.174576093032692E-7 7.948548998487153E-5 7.0525476979675E-7
node 9.642426973962682E-11 7.298984745742861E-10 3.174576093032692E-7 1.297545769780029E-9 1.221364664850559E-9 1.558083874410664E-9
peri 1.880571154435795E-8 1.715302755023325E-7 7.948548998487153E-5 1.221364664850559E-9 6.207417899753397E-7 3.908500591690732E-9
i 2.141831109285571E-10 1.621491311805193E-9 7.0525476979675E-7 1.558083874410664E-9 3.908500591690732E-9 2.222238430004511E-9

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.8   n/a MPO366278  

91554 (1999 RZ215)          Discovered 1999-Sep-08 by Luu, J. X., Trujillo, C. A., Jewitt, D. C. at Mauna Kea
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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