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8860 Rohloff (1991 TE5)
Classification: Main-belt Asteroid          SPK-ID: 2008860
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09280594087927725 1.8603e-08  
a 2.545129127778957 8.325e-09 au
q 2.308926024416177 4.7226e-08 au
i 13.95289111011665 1.0367e-06 deg
node 15.14878521406193 1.4341e-06 deg
peri 295.3865035853578 1.0737e-05 deg
M 137.5052865159128 9.8397e-06 deg
tp 2458634.025906190553
(2019-May-30.52590619)
3.9798e-05 TDB
period 1483.075152516418
4.06
7.2766e-06
1.992e-08
d
yr
n .2427388790036484 1.191e-09 deg/d
Q 2.781332231141737 9.0976e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3076  
   data-arc span      18994 days (52.00 yr)  
   first obs. used      1969-03-14  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:56:11  

Additional Information
 Earth MOID = 1.33218 au 
 Jupiter MOID = 2.49342 au 
 T_jup = 3.396 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09392181492734249 1.8493e-08  
q 2.305722301763309 4.6963e-08 au
tp 2457152.805977927995
(2015-May-10.30597793)
3.8281e-05 TDB
node 15.19166888099913 1.4325e-06 deg
peri 295.6687663006029 1.0631e-05 deg
i 13.96412664713512 1.0372e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3076  
   data-arc span      18994 days (52.00 yr)  
   first obs. used      1969-03-14  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:56:11  

Additional Information
 Jupiter MOID = 2.49342 au 
 T_jup = 3.396 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.419787040951281E-16 -8.572748481576684E-16 -1.277653690459612E-13 4.025132771577085E-15 -6.359794504071942E-14 -6.913725533860016E-15
q -8.572748481576684E-16 2.205551967876644E-15 3.384986604192891E-13 -1.054637611833789E-14 1.663170971224415E-13 1.767404959104269E-14
tp -1.277653690459612E-13 3.384986604192891E-13 1.46545660521959E-9 1.640313656053118E-11 3.998579508871424E-10 -8.866487781633098E-12
node 4.025132771577085E-15 -1.054637611833789E-14 1.640313656053118E-11 2.052193773068934E-12 2.637108762094292E-12 5.205139024260988E-13
peri -6.359794504071942E-14 1.663170971224415E-13 3.998579508871424E-10 2.637108762094292E-12 1.130126547169958E-10 -2.451091660780921E-12
i -6.913725533860016E-15 1.767404959104269E-14 -8.866487781633098E-12 5.205139024260988E-13 -2.451091660780921E-12 1.075825519424543E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.68   n/a E2021B10  
diameter diameter 8.883 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.8411 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.156   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

8860 Rohloff           Discovered 1991 Oct. 5 by L. D. Schmadel and F. Börngen at Tautenburg.
Ralf-Rainer Rohloff (b. 1960) is a design engineer on the staff of the Max-Planck-Institut für Astronomie, Heidelberg. Head of the construction team, he played an important role in the development of adaptive optics devices for the MPIA and UKIRT telescopes. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1991 TE5 = 1969 EY1 = 1975 WF = 1979 WN2 = 1995 UF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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