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 ]  
215237 (2001 DJ2)
Classification: Main-belt Asteroid          SPK-ID: 2215237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341061555385496 5.508e-08  
a 2.700021195601322 1.8563e-08 au
q 2.33793173318663 1.4789e-07 au
i 7.070526984871039 5.3781e-06 deg
node 334.0327555365751 4.9058e-05 deg
peri 83.74494915363597 5.5101e-05 deg
M 203.3290319485258 2.1841e-05 deg
tp 2459705.737201111095
(2022-May-06.23720111)
9.9101e-05 TDB
period 1620.500565979653
4.44
1.6712e-05
4.575e-08
d
yr
n .2221535786890432 2.291e-09 deg/d
Q 3.062110658016013 2.1053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7126 days (19.51 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56756  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:01:43  

Additional Information
 Earth MOID = 1.36268 au 
 Jupiter MOID = 2.29091 au 
 T_jup = 3.344 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457104.5 (2015-Mar-23.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354455667720434 5.4972e-08  
q 2.332647942741906 1.4755e-07 au
tp 2456468.676167066942
(2013-Jun-25.17616707)
9.9721e-05 TDB
node 334.0737506660138 4.9072e-05 deg
peri 84.08823110212033 5.4982e-05 deg
i 7.071574342165699 5.379e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7126 days (19.51 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56756  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:01:43  

Additional Information
 Jupiter MOID = 2.29091 au 
 T_jup = 3.344 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.021944915089005E-15 -8.061237052679404E-15 -1.085994549790017E-12 -3.212838048620168E-15 -2.831591803036738E-13 -9.539839572406807E-15
q -8.061237052679404E-15 2.177088906602565E-14 2.52947325183043E-12 1.202500559807394E-14 6.830086531204859E-13 2.622504754426343E-14
tp -1.085994549790017E-12 2.52947325183043E-12 9.944345647755859E-9 -7.592603617266129E-12 2.51068075160552E-9 2.270106189148138E-12
node -3.212838048620168E-15 1.202500559807394E-14 -7.592603617266129E-12 2.408072424228164E-9 -2.391082388559753E-9 3.440570143289728E-11
peri -2.831591803036738E-13 6.830086531204859E-13 2.51068075160552E-9 -2.391082388559753E-9 3.023052627044832E-9 -3.346745079032933E-11
i -9.539839572406807E-15 2.622504754426343E-14 2.270106189148138E-12 3.440570143289728E-11 -3.346745079032933E-11 2.893410589878929E-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 16.0   n/a MPO294361  
diameter diameter 3.955 km 0.613 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215237 (2001 DJ2)          Discovered 2001-Feb-16 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ 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
1943-Dec-23 15:10 00:03 Hygie 0.0321518950549119 0.0321388506085755 0.0321649401066271 3.5752079623726 3.57520762625244 2431082.132167127 3.33265123943082 685.478810917935 83.3957313154782 -18.945195343644 19820.043038045 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 09:01:45 2019-Jul-13 09:01
1952-Nov-22 05:07 < 00:01 Thisb 0.0447122871659028 0.0447102414604906 0.0447143338671634 4.67011513511405 4.67011510246126 2434338.712869477 0.762598267633911 629.201043657278 86.1227004144841 -84.9681536150253 77340.4425149657 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 09:01:45 2019-Jul-13 09:01
2125-Apr-02 03:52 00:03 Hebe 0.0327444435040725 0.0327211312077144 0.0327677577899374 6.94039644046662 6.94039641311169 2497291.661389057 3.17636167364059 1230.22748060029 69.8839970901556 -19.1608581291532 23305.8399609715 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 09:01:45 2019-Jul-13 09:01
2200-Mar-15 23:20 00:33 Amphi 0.0210531854655493 0.0210099963962262 0.0210963762146395 1.31828762656443 1.31828741943344 2524667.472393153 33.1134422355827 2166.85560104541 56.9117907637666 8.08884589702236 7880.18473057843 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 09:01:45 2019-Jul-13 09:01

Alternate Designations
 2001 DJ2 = 1999 TO271 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-26 08:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin