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18394 (1992 RR5)
Classification: Main-belt Asteroid          SPK-ID: 2018394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797788102012152 3.4015e-08  
a 2.453973717273761 6.5109e-09 au
q 2.012801242117231 8.3062e-08 au
i 4.057472219995924 2.874e-06 deg
node 88.53701582488792 5.8128e-05 deg
peri 38.44318094526461 5.9148e-05 deg
M 58.72592448059812 9.7319e-06 deg
tp 2459167.449813936044
(2020-Nov-13.94981394)
3.7938e-05 TDB
period 1404.116967290431
3.84
5.5881e-06
1.53e-08
d
yr
n .2563888966420678 1.0204e-09 deg/d
Q 2.895146192430291 7.6815e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      10521 days (28.80 yr)  
   first obs. used      1992-09-02  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:36:51  

Additional Information
 Earth MOID = 1.03049 au 
 Jupiter MOID = 2.16997 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457410.5 (2016-Jan-23.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787477172413428 3.4191e-08  
q 2.015878795537644 8.3477e-08 au
tp 2457764.073776557886
(2017-Jan-10.57377656)
3.864e-05 TDB
node 88.5672451240598 5.8175e-05 deg
peri 38.67646857545096 5.9204e-05 deg
i 4.055852444130401 2.8716e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      10521 days (28.80 yr)  
   first obs. used      1992-09-02  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:36:51  

Additional Information
 Jupiter MOID = 2.16997 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.169015396015985E-15 -2.848315737784088E-15 5.690342375174549E-13 1.281669838505717E-14 1.499994760101869E-13 -1.255626579816118E-15
q -2.848315737784088E-15 6.968410107351182E-15 -1.42802213051782E-12 -3.032829488095662E-14 -3.808068342579825E-13 3.108899453276616E-15
tp 5.690342375174549E-13 -1.42802213051782E-12 1.493051747143609E-9 5.780137439979989E-12 4.443092886002588E-10 -1.034616091630799E-12
node 1.281669838505717E-14 -3.032829488095662E-14 5.780137439979989E-12 3.384274576006727E-9 -3.373956065738707E-9 4.296668974908879E-11
peri 1.499994760101869E-13 -3.808068342579825E-13 4.443092886002588E-10 -3.373956065738707E-9 3.50515490054133E-9 -4.316856702972474E-11
i -1.255626579816118E-15 3.108899453276616E-15 -1.034616091630799E-12 4.296668974908879E-11 -4.316856702972474E-11 8.246116968246276E-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 14.15   n/a MPO614063  
diameter diameter 4.473 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18394 (1992 RR5)          Discovered 1992-Sep-02 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 RR5 = 1994 CT1 = 1999 NO20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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