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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101531294970413 3.3459e-08  
a 2.751246603545551 1.2316e-08 au
q 2.471908973104621 9.1696e-08 au
i 9.419909070599232 5.533e-06 deg
node 30.95925344492573 2.0926e-05 deg
peri 276.3255403327572 3.3549e-05 deg
M 56.32386451309915 2.6529e-05 deg
tp 2458739.714974415155
(2019-Sep-13.21497442)		 0.00012246 TDB
period 1666.835364052655
4.56		 1.1192e-05
3.064e-08		 d
yr
n .2159781390315088 1.4502e-09 deg/d
Q 3.030584233986481 1.3566e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      8437 days (23.10 yr)  
   first obs. used      1997-10-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52616  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:07:51  

Additional Information
 Earth MOID = 1.4799 au 
 Jupiter MOID = 2.22034 au 
 T_jup = 3.319 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457266.5 (2015-Sep-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1028219069726436 3.3427e-08  
q 2.469051704347588 9.179e-08 au
tp 2457076.259396005287
(2015-Feb-22.75939601)		 0.00011962 TDB
node 31.00209678819559 2.0897e-05 deg
peri 277.1670383872538 3.3324e-05 deg
i 9.427606081520677 5.5366e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      8437 days (23.10 yr)  
   first obs. used      1997-10-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52616  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:07:51  

Additional Information
 Jupiter MOID = 2.22034 au 
 T_jup = 3.319 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.11737680999592E-15 -3.046129425575021E-15 9.203608931198908E-13 2.813577664162218E-15 1.619720283549817E-13 -1.122277343281838E-15
q -3.046129425575021E-15 8.425482594903786E-15 -2.412886845579156E-12 -9.006314293040234E-15 -4.18561878163244E-13 3.414744689397252E-15
tp 9.203608931198908E-13 -2.412886845579156E-12 1.430956092843091E-8 -5.734448120892551E-12 3.110073023586971E-9 2.065100726557632E-12
node 2.813577664162218E-15 -9.006314293040234E-15 -5.734448120892551E-12 4.366957563210875E-10 -4.318639546967916E-10 -1.366664434199754E-11
peri 1.619720283549817E-13 -4.18561878163244E-13 3.110073023586971E-9 -4.318639546967916E-10 1.110519740586021E-9 1.401336484409457E-11
i -1.122277343281838E-15 3.414744689397252E-15 2.065100726557632E-12 -1.366664434199754E-11 1.401336484409457E-11 3.065386897778759E-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 14.7   n/a MPO436336  
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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