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
JPL Small-Body Database Browser
Search: [ help ]  
187802 (1999 JU2)
Classification: Main-belt Asteroid          SPK-ID: 2187802
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2232711674259622 6.1609e-08  
a 2.695340917603464 1.6288e-08 au
q 2.093549004319174 1.6569e-07 au
i 13.80678753533955 4.4076e-06 deg
node 115.9617609461896 2.9717e-05 deg
peri 118.2782923219819 3.2489e-05 deg
M 314.0529404002029 1.2461e-05 deg
tp 2459406.788114484755
(2021-Jul-11.28811448)
5.5451e-05 TDB
period 1616.288873789867
4.43
1.4651e-05
4.011e-08
d
yr
n .2227324618995078 2.019e-09 deg/d
Q 3.297132830887753 1.9925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      8028 days (21.98 yr)  
   first obs. used      1999-05-08  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:19  

Additional Information
 Earth MOID = 1.11896 au 
 Jupiter MOID = 1.8893 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457446.5 (2016-Feb-28.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2242348905871712 6.1506e-08  
q 2.0905903213628 1.6565e-07 au
tp 2457789.686689770625
(2017-Feb-05.18668977)
6.037e-05 TDB
node 116.0132453114332 2.9712e-05 deg
peri 118.1423078240176 3.2454e-05 deg
i 13.81014500309842 4.4091e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      8028 days (21.98 yr)  
   first obs. used      1999-05-08  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:19  

Additional Information
 Jupiter MOID = 1.8893 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.783013691951148E-15 -1.01595840366356E-14 -1.834261507142777E-12 1.170011529345974E-14 -3.358171769967493E-13 -2.662811646127043E-14
q -1.01595840366356E-14 2.74412755553275E-14 4.601046259405503E-12 -2.993822634198755E-14 8.200215064312272E-13 7.152631821729461E-14
tp -1.834261507142777E-12 4.601046259405503E-12 3.644561922188035E-9 -3.965720357496909E-14 8.619758767042347E-10 1.993118364531645E-11
node 1.170011529345974E-14 -2.993822634198755E-14 -3.965720357496909E-14 8.827897740257547E-10 -8.567476978781786E-10 2.076286424740084E-11
peri -3.358171769967493E-13 8.200215064312272E-13 8.619758767042347E-10 -8.567476978781786E-10 1.053291010793943E-9 -1.608990910919119E-11
i -2.662811646127043E-14 7.152631821729461E-14 1.993118364531645E-11 2.076286424740084E-11 -1.608990910919119E-11 1.943984454720414E-11

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 16.19   n/a MPCxxxxx  

187802 (1999 JU2)          Discovered 1999-May-08 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ 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
1917-Aug-12 17:55 00:03 Jupiter 1.88313024117632 1.88312955101248 1.88313093134252 1.82432633367775 1.55838911408766 2421453.246791780 2.86996876323029 239.147734047453 206.154586105599 -40.0972785789933 512900.30366105 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15
1952-Oct-29 00:03 00:02 Jupiter 1.88680058488404 1.88679989092506 1.8868012788576 1.26009172690039 0.830657070086795 2434314.502278301 1.87107989293836 1151.517331788 374.418322245743 -22.5142873115808 680618.806674139 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15
1988-Jan-06 03:32 < 00:01 Jupiter 1.93560194634617 1.93560126731482 1.93560262538588 1.02731247348943 0.424461677492676 2447166.647256741 0.864944585898654 3534.62621312843 1346.02716587044 0.638439602001729 898507.701910351 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15
2108-Mar-10 05:16 00:02 Jupiter 1.96116124204729 1.96115997817902 1.96116250593205 3.12772576843054 2.98644798578631 2491059.719542795 2.32373703764784 326.203724730696 22.9641652084592 -83.2282940364916 1912007.53595738 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15
2143-Jun-01 19:45 00:03 Jupiter 1.89502453211747 1.89502353854853 1.89502552570408 2.65126487733917 2.47694607645786 2503926.323041177 3.18091884238444 361.538586747397 36.7120169712937 89.5630666363698 1361273.73685398 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15
2178-Aug-23 18:12 00:04 Jupiter 1.86749542178062 1.86749475115659 1.86749609240645 2.14197132958083 1.91857233320979 2516793.258585898 4.21016407970657 261.57739962821 139.684971330221 67.8036421537077 579486.445393584 T 14 CATAB v2.0g-lin.ifort 2021-May-04 10:15:21 2021-May-04 10:15

Alternate Designations
 1999 JU2 = 2003 FP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-18 12:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin