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79443 (1997 UL1)
Classification: Main-belt Asteroid          SPK-ID: 2079443
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101477132204302 3.2258e-08  
a 2.751729557787764 1.1901e-08 au
q 2.47249193366165 8.7615e-08 au
i 9.419083600229545 5.2707e-06 deg
node 30.95872232875506 1.9583e-05 deg
peri 276.4316431350381 3.2266e-05 deg
M 99.41644952565363 2.6294e-05 deg
tp 2458740.070863569481
(2019-Sep-13.57086357)
0.00012102 TDB
period 1667.274278108426
4.56
1.0816e-05
2.961e-08
d
yr
n .2159212822550295 1.4008e-09 deg/d
Q 3.030967181913879 1.3109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      8513 days (23.31 yr)  
   first obs. used      1997-10-11  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:41:54  

Additional Information
 Earth MOID = 1.47856 au 
 Jupiter MOID = 2.21937 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457466.5 (2016-Mar-19.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1028177371734316 3.2159e-08  
q 2.468649411678943 8.7488e-08 au
tp 2457075.921845437150
(2015-Feb-22.42184544)
0.00011785 TDB
node 31.00125091877528 1.9552e-05 deg
peri 277.0729630110409 3.2059e-05 deg
i 9.428303845280587 5.2748e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      8513 days (23.31 yr)  
   first obs. used      1997-10-11  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:41:54  

Additional Information
 Jupiter MOID = 2.21937 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.034205717238625E-15 -2.793036542275519E-15 7.392101358764816E-13 2.059845013533388E-15 1.18380182668153E-13 -1.025223321379137E-15
q -2.793036542275519E-15 7.654224589121571E-15 -1.868842473801927E-12 -6.603654325645984E-15 -2.873627003248329E-13 3.122550743608163E-15
tp 7.392101358764816E-13 -1.868842473801927E-12 1.388943447623137E-8 7.757008886780828E-12 2.996835409972562E-9 -1.116316120772614E-12
node 2.059845013533388E-15 -6.603654325645984E-15 7.757008886780828E-12 3.822980146518469E-10 -3.752302363128383E-10 -1.627611191001267E-12
peri 1.18380182668153E-13 -2.873627003248329E-13 2.996835409972562E-9 -3.752302363128383E-10 1.027760433105908E-9 1.434748652008379E-12
i -1.025223321379137E-15 3.122550743608163E-15 -1.116316120772614E-12 -1.627611191001267E-12 1.434748652008379E-12 2.782330681275851E-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 14.77   n/a MPCxxxxx  
diameter diameter 2.918 km 0.646 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.96553 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.300   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79443 (1997 UL1)          Discovered 1997-Oct-23 by Comba, P. G. at Prescott
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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