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115488 (2003 UL21)
Classification: Main-belt Asteroid          SPK-ID: 2115488
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1434294189263483 3.7584e-08  
a 3.176193200036386 2.4582e-08 au
q 2.720633654957349 1.1502e-07 au
i 22.34438962534367 5.7138e-06 deg
node 23.26399182728156 1.0051e-05 deg
peri 249.4931996630179 2.2811e-05 deg
M 138.4253497605268 2.24e-05 deg
tp 2458405.491223527046
(2018-Oct-13.99122353)
0.00012601 TDB
period 2067.563203021624
5.66
2.4003e-05
6.572e-08
d
yr
n .1741180146144412 2.0214e-09 deg/d
Q 3.631752745115424 2.8108e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1274  
   data-arc span      7724 days (21.15 yr)  
   first obs. used      2000-01-29  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50404  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:56:37  

Additional Information
 Earth MOID = 1.79319 au 
 Jupiter MOID = 1.65013 au 
 T_jup = 3.069 
[ show covariance matrix ]

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 13.46   n/a E2021B55  
diameter diameter 9.157 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115488 (2003 UL21)          Discovered 2003-Oct-18 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1941-Aug-06 05:19 00:03 Jupiter 1.95120799059804 1.95120560343871 1.95121037821788 5.29766265431335 5.21507683533195 2430212.721219334 2.63926541773153 1591.75546068382 35.3598687910763 85.7573041654363 2338775.97935373 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
1952-Aug-11 06:30 00:02 Jupiter 1.68515231165572 1.68515165583489 1.68515296747712 6.10259339891749 6.01966519803745 2434235.770799214 1.7761745243484 158.725517351903 30.4251673619777 -85.6583795183077 3485280.34941307 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
1963-Aug-26 23:26 00:02 Jupiter 1.84073282208746 1.84073153867586 1.84073410550428 6.42606883245171 6.35405780044737 2438268.476369545 1.50278299159562 234.596563254107 46.380815406428 79.0795439792342 3442153.40698437 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
2072-Jan-11 10:14 00:02 Jupiter 1.95195456325006 1.95195281094904 1.95195631586009 5.27815925170213 5.19529536709293 2477852.926513515 2.16695256105643 1409.2375365476 39.6572463674779 86.688966745524 2495355.10124046 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
2083-Jan-15 08:40 00:02 Jupiter 1.70608593506208 1.70608533443177 1.70608653569258 6.13684874418606 6.05540833741853 2481874.861119758 2.23012768918964 137.563184257284 29.1986961653091 -87.046377288849 3425835.03921831 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
2094-Jan-28 05:47 00:03 Jupiter 1.87023038577275 1.87022813706535 1.87023263452256 6.5066987960406 6.43671767193206 2485905.741072800 2.80672127445823 502.208006357254 45.3373433900588 78.231542970414 3116472.64064778 T 29 CATAB v2.0g-lin.ifort 2021-May-04 08:56:42 2021-May-04 08:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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