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3518 Florena (1977 QC4)
Classification: Main-belt Asteroid          SPK-ID: 2003518
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787041058213722 2.2151e-08  
a 2.675017345899632 1.1015e-08 au
q 2.196980763043978 6.2328e-08 au
i 13.91468256798656 4.7552e-07 deg
node 147.8402965014756 9.4489e-06 deg
peri 165.7704049305287 6.212e-06 deg
M 327.7238687334535 6.5466e-06 deg
tp 2459343.773972620991
(2021-May-09.27397262)
2.9424e-05 TDB
period 1598.042519953951
4.38
9.8706e-06
2.702e-08
d
yr
n .225275607816977 1.3915e-09 deg/d
Q 3.153053928755286 1.2984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2811  
   data-arc span      25705 days (70.38 yr)  
   first obs. used      1950-04-22  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:13:06  

Additional Information
 Earth MOID = 1.18418 au 
 Jupiter MOID = 2.18748 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457145.5 (2015-May-03.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177112487434708 2.2173e-08  
q 2.202946892589401 6.2374e-08 au
tp 2457745.379054080492
(2016-Dec-22.87905408)
2.6982e-05 TDB
node 147.8617983441229 9.4466e-06 deg
peri 165.5637607885359 6.1862e-06 deg
i 13.91073467390117 4.752e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2811  
   data-arc span      25705 days (70.38 yr)  
   first obs. used      1950-04-22  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:13:06  

Additional Information
 Jupiter MOID = 2.18748 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.916368071158674E-16 -1.369060836407609E-15 -3.715668551731797E-13 7.175046397718509E-16 -4.177507423396147E-14 -2.407800217937751E-15
q -1.369060836407609E-15 3.890532161115956E-15 1.01429622462704E-12 -8.839113704003604E-16 1.061857342004955E-13 6.717782225969963E-15
tp -3.715668551731797E-13 1.01429622462704E-12 7.28026962044615E-10 1.51952897470577E-10 -9.068801541918708E-12 3.411029448401837E-12
node 7.175046397718509E-16 -8.839113704003604E-16 1.51952897470577E-10 8.923904308950261E-11 -4.750789156912564E-11 1.16410706562425E-12
peri -4.177507423396147E-14 1.061857342004955E-13 -9.068801541918708E-12 -4.750789156912564E-11 3.826946241002852E-11 -4.452431950154139E-13
i -2.407800217937751E-15 6.717782225969963E-15 3.411029448401837E-12 1.16410706562425E-12 -4.452431950154139E-13 2.258106918490096E-13

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 12.48   n/a E2021B10  
diameter diameter 8.631 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.2269 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.313   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3518 Florena (1977 QC4)          Discovered 1977-Aug-18 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1977 QC4 = 1982 UD3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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