Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
15915 (1997 UR3)
Classification: Main-belt Asteroid          SPK-ID: 2015915
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04920796856254267 3.7306e-08  
a 2.667168222556602 1.0189e-08 au
q 2.535922292510024 1.0072e-07 au
i 3.334540138915574 3.5925e-06 deg
node 37.17327831305104 6.1624e-05 deg
peri 294.021352096938 7.073e-05 deg
M 226.4851680837183 3.6405e-05 deg
tp 2459986.566625991521
(2023-Feb-11.06662599)
0.00016181 TDB
period 1591.014139089389
4.36
9.1167e-06
2.496e-08
d
yr
n .2262707735621033 1.2966e-09 deg/d
Q 2.79841415260318 1.069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2093  
   data-arc span      10156 days (27.81 yr)  
   first obs. used      1993-08-17  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:10  

Additional Information
 Earth MOID = 1.52665 au 
 Jupiter MOID = 2.36399 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457057.5 (2015-Feb-04.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05022691833601779 3.7287e-08  
q 2.532785040583418 1.0085e-07 au
tp 2456794.440866857368
(2014-May-16.94086686)
0.00015516 TDB
node 37.21100402949962 6.1648e-05 deg
peri 291.8615106799891 7.0492e-05 deg
i 3.335416152653185 3.5917e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2093  
   data-arc span      10156 days (27.81 yr)  
   first obs. used      1993-08-17  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:10  

Additional Information
 Jupiter MOID = 2.36399 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.390325132173324E-15 -3.743284373376312E-15 1.592748397263091E-12 -5.877116094076898E-16 3.295360469935295E-13 2.147420511624609E-16
q -3.743284373376312E-15 1.017077745819253E-14 -3.976272171180365E-12 2.011309666383061E-15 -8.161579130553919E-13 -5.398453577621454E-16
tp 1.592748397263091E-12 -3.976272171180365E-12 2.407325651651329E-8 2.654773658644829E-11 5.319541863137538E-9 -1.270118594327636E-12
node -5.877116094076898E-16 2.011309666383061E-15 2.654773658644829E-11 3.800439111529611E-9 -3.787775499610546E-9 -5.778063467619275E-11
peri 3.295360469935295E-13 -8.161579130553919E-13 5.319541863137538E-9 -3.787775499610546E-9 4.969149257497715E-9 5.740008595889487E-11
i 2.147420511624609E-16 -5.398453577621454E-16 -1.270118594327636E-12 -5.778063467619275E-11 5.740008595889487E-11 1.290045599165949E-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 14.16   n/a MPO636303  
diameter diameter 4.098 km 0.503 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.370 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.264   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15915 (1997 UR3)          Discovered 1997-Oct-26 by Kobayashi, T. at Oizumi
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 UR3 = 1999 CD42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-16 16:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin