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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7018278016632979 2.7769e-05  
a 103.8168698307596 0.010365 au
q 30.95530430187284 0.00022079 au
i 25.45409754735074 4.7069e-05 deg
node 341.5757869860341 3.623e-05 deg
peri 335.7929712334242 0.00077141 deg
M 7.523329822381269 0.001211 deg
tp 2451126.143447235161
(1998-Nov-08.64344724)
0.099003 TDB
period 386367.2639139058
1057.82
57.86
0.1584
d
yr
n .000931755957668864 1.3953e-07 deg/d
Q 176.6784353596464 0.017639 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .74816  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:46:29  

Additional Information
 Earth MOID = 29.9567 au 
 Jupiter MOID = 25.9817 au 
 T_jup = 5.796 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457167.5 (2015-May-25.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6924275220528802 2.7611e-05  
q 30.94876521415448 0.00022182 au
tp 2451076.864726613396
(1998-Sep-20.36472661)
0.10139 TDB
node 341.678282689458 3.6021e-05 deg
peri 335.4974914693811 0.00078787 deg
i 25.55018558281242 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .74816  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:46:29  

Additional Information
 Jupiter MOID = 25.9817 au 
 T_jup = 5.796 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.6236835576923E-10 5.727750479388729E-9 2.519203414519308E-6 9.642426998472367E-11 1.880571156097128E-8 2.141831108121861E-10
q 5.727750479388729E-9 4.920346331220514E-8 2.220766068532839E-5 7.298984771465612E-10 1.715302757310913E-7 1.621491312231702E-9
tp 2.519203414519308E-6 2.220766068532839E-5 .01028034545733545 3.174576112956681E-7 7.948549029647657E-5 7.052547718871E-7
node 9.642426998472367E-11 7.298984771465612E-10 3.174576112956681E-7 1.297545769996969E-9 1.221364678328214E-9 1.558083874803462E-9
peri 1.880571156097128E-8 1.715302757310913E-7 7.948549029647657E-5 1.221364678328214E-9 6.207417919373882E-7 3.908500603859343E-9
i 2.141831108121861E-10 1.621491312231702E-9 7.052547718871E-7 1.558083874803462E-9 3.908500603859343E-9 2.222238430567255E-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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