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11845 (1987 RZ)
Classification: Main-belt Asteroid          SPK-ID: 2011845
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2108419028030156 3.9485e-08  
a 3.194113964436284 1.6947e-08 au
q 2.520660898404855 1.2924e-07 au
i 2.031293477219725 3.5397e-06 deg
node 125.5228677228025 0.00013188 deg
peri 224.7717439053592 0.00013217 deg
M 286.8076805548557 1.1647e-05 deg
tp 2459624.423065873233
(2022-Feb-13.92306587)
6.9307e-05 TDB
period 2085.086316040888
5.71
1.6594e-05
4.543e-08
d
yr
n .1726547228431097 1.3741e-09 deg/d
Q 3.867567030467714 2.052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1833  
   data-arc span      14265 days (39.06 yr)  
   first obs. used      1981-07-02  
   last obs. used      2020-07-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:59:17  

Additional Information
 Earth MOID = 1.51347 au 
 Jupiter MOID = 1.56694 au 
 T_jup = 3.160 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456917.5 (2014-Sep-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2100891580716794 3.9539e-08  
q 2.523467590482242 1.2925e-07 au
tp 2457541.871235362950
(2016-Jun-02.37123536)
6.1491e-05 TDB
node 125.5267535236777 0.00013192 deg
peri 225.2614921983158 0.00013222 deg
i 2.030833129912214 3.5383e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1833  
   data-arc span      14265 days (39.06 yr)  
   first obs. used      1981-07-02  
   last obs. used      2020-07-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:59:17  

Additional Information
 Jupiter MOID = 1.56694 au 
 T_jup = 3.160 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.56333115093268E-15 -5.083103265786518E-15 5.209598473742294E-13 4.867817762961255E-16 9.72723090341736E-14 1.248586096014321E-16
q -5.083103265786518E-15 1.670644707154458E-14 -1.364672981394622E-12 6.137285839207774E-16 -2.785660998724414E-13 -2.7025022048915E-16
tp 5.209598473742294E-13 -1.364672981394622E-12 3.781172966155174E-9 4.406176097662352E-12 5.86630312585404E-10 4.279577741425145E-13
node 4.867817762961255E-16 6.137285839207774E-16 4.406176097662352E-12 1.740291644463094E-8 -1.7391194713768E-8 5.017467732547307E-11
peri 9.72723090341736E-14 -2.785660998724414E-13 5.86630312585404E-10 -1.7391194713768E-8 1.74810941430398E-8 -5.008583927786744E-11
i 1.248586096014321E-16 -2.7025022048915E-16 4.279577741425145E-13 5.017467732547307E-11 -5.008583927786744E-11 1.251983910949352E-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 13.25   n/a E2021B10  
diameter diameter 10.046 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11845 (1987 RZ)          Discovered 1987-Sep-12 by Debehogne, H. at La Silla
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1987 RZ = 1981 NJ1 = 1982 UK10 = 1991 FF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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