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52678 (1998 DC21)
Classification: Main-belt Asteroid          SPK-ID: 2052678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05851129886353688 3.9833e-08  
a 2.982975952217207 1.9855e-08 au
q 2.808438154774282 1.1572e-07 au
i 9.550683780391935 4.919e-06 deg
node 340.1588661052855 2.6359e-05 deg
peri 147.7774861219344 5.0353e-05 deg
M 217.3558548116475 4.2517e-05 deg
tp 2460142.131943438795
(2023-Jul-16.63194344)
0.00022267 TDB
period 1881.798227915522
5.15
1.8788e-05
5.144e-08
d
yr
n .1913063763476778 1.91e-09 deg/d
Q 3.157513749660131 2.1017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1137  
   data-arc span      8515 days (23.31 yr)  
   first obs. used      1998-02-22  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57936  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:23:26  

Additional Information
 Earth MOID = 1.82803 au 
 Jupiter MOID = 1.86319 au 
 T_jup = 3.235 
[ 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 13.92   n/a E2021B10  
diameter diameter 6.341 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.45123 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 0.101   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52678 (1998 DC21)          Discovered 1998-Feb-22 by Spacewatch at Kitt Peak
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ 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
1902-Dec-11 04:37 00:03 Jupiter 1.88680084796148 1.88680027444588 1.88680142147729 3.8457481217763 3.72718912173967 2416094.692230480 2.99106905002643 97.0580224685407 25.6432848609178 82.2200285634234 3408181.50024117 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
1939-Apr-17 08:14 00:02 Jupiter 1.87599617631248 1.87599564129287 1.87599671133422 3.89026948321577 3.77242438463809 2429370.843361779 2.00083649297682 185.11292837584 19.379028030001 85.187903900737 3057938.1507192 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
1975-Aug-31 10:52 00:01 Jupiter 1.97989361390606 1.97989299402229 1.97989423378982 3.8267611532574 3.71328381045909 2442655.953103828 1.06146688817462 72.3723185164991 28.1162789422132 84.356728185432 3117776.68728996 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
2020-Dec-18 23:09 < 00:01 Jupiter 1.97797315904313 1.97797272173438 1.9779735963521 3.77923956783714 3.66417749308448 2459202.464506019 0.291149716543946 67.9359912645184 16.1843579843923 80.4627236701084 3532337.76071837 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
2057-Apr-27 21:54 00:01 Jupiter 1.87844730269777 1.87844683609002 1.87844776930562 3.88120816998461 3.76323587552873 2472481.412459770 1.18476288859772 105.012929519507 19.9590597253834 86.1085238907676 3318470.65931087 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
2093-Sep-05 01:08 00:02 Jupiter 1.88881071259507 1.8888101638882 1.88881126130472 3.82677104795592 3.70773410171043 2485760.547168356 2.20820525024063 214.158857700325 20.2997006494189 85.4563232926232 3081774.26422931 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23
2175-May-10 14:19 00:04 Jupiter 1.95346737783593 1.95346573017208 1.95346902550478 3.86667104424308 3.75285836806717 2515592.096379666 4.38750569875593 189.606217698822 27.450224232181 65.7071535641966 3094055.5614608 T 23 CATAB v2.0g-lin.ifort 2021-Jul-09 14:23:29 2021-Jul-09 14:23

Alternate Designations
 1998 DC21 = 2000 NV16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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