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37636 (1993 UQ4)
Classification: Main-belt Asteroid          SPK-ID: 2037636
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898635005076663 3.1335e-08  
a 2.259802321316728 5.5741e-09 au
q 1.830748342136183 6.9419e-08 au
i 3.871555540852718 3.2163e-06 deg
node 132.0181962020972 4.764e-05 deg
peri 182.7731051436441 4.843e-05 deg
M 110.7144397042246 8.2854e-06 deg
tp 2459014.902194685077
(2020-Jun-14.40219469)
2.8512e-05 TDB
period 1240.806621795426
3.40
4.5909e-06
1.257e-08
d
yr
n .2901338481568435 1.0735e-09 deg/d
Q 2.688856300497271 6.6324e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2200  
   data-arc span      12613 days (34.53 yr)  
   first obs. used      1986-09-07  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 20:33:42  

Additional Information
 Earth MOID = .81632 au 
 Jupiter MOID = 2.59144 au 
 T_jup = 3.594 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457405.5 (2016-Jan-18.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1895716035812816 3.1292e-08  
q 1.831891795553761 6.9264e-08 au
tp 2457774.456204829388
(2017-Jan-20.95620483)
2.8985e-05 TDB
node 132.040681745996 4.7659e-05 deg
peri 182.8205034497393 4.8455e-05 deg
i 3.870448938758132 3.2153e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2200  
   data-arc span      12613 days (34.53 yr)  
   first obs. used      1986-09-07  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 20:33:42  

Additional Information
 Jupiter MOID = 2.59144 au 
 T_jup = 3.594 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.791974803675592E-16 -2.163256929831417E-15 2.63968211575984E-13 7.116421358643665E-15 5.077229274811333E-14 -9.355623441073717E-16
q -2.163256929831417E-15 4.797503237115584E-15 -6.180144851821853E-13 -1.595347399670638E-14 -1.24066380625243E-13 2.111693812129307E-15
tp 2.63968211575984E-13 -6.180144851821853E-13 8.401191829576115E-10 6.730775622493877E-12 2.614423551788219E-10 -8.243156673126822E-13
node 7.116421358643665E-15 -1.595347399670638E-14 6.730775622493877E-12 2.271422711830232E-9 -2.264038667474797E-9 5.426504683666722E-11
peri 5.077229274811333E-14 -1.24066380625243E-13 2.614423551788219E-10 -2.264038667474797E-9 2.347869198991173E-9 -5.438596851871591E-11
i -9.355623441073717E-16 2.111693812129307E-15 -8.243156673126822E-13 5.426504683666722E-11 -5.438596851871591E-11 1.033799888380159E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.78   n/a E2021B10  
diameter diameter 2.538 km 0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 45.541 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.386   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37636 (1993 UQ4)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 UQ4 = 1986 RD18 = 1993 VK5 = 1999 GT8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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