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213991 (2004 BK42)
Classification: Main-belt Asteroid          SPK-ID: 2213991
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2002207244944438 7.1575e-08  
a 2.770409345723656 1.7508e-08 au
q 2.215715979376687 1.9416e-07 au
i 5.039681556526045 6.1139e-06 deg
node 303.3378186005886 6.9214e-05 deg
peri 230.8910748519247 7.0047e-05 deg
M 211.458726460251 1.2999e-05 deg
tp 2459895.458681550998
(2022-Nov-11.95868155)
6.4308e-05 TDB
period 1684.280196314669
4.61
1.5966e-05
4.371e-08
d
yr
n .2137411582631601 2.0261e-09 deg/d
Q 3.325102712070624 2.1013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      6656 days (18.22 yr)  
   first obs. used      2002-10-16  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63962  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:55  

Additional Information
 Earth MOID = 1.22478 au 
 Jupiter MOID = 1.68073 au 
 T_jup = 3.302 
[ 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 15.93   n/a MPCxxxxx  
rotation period rot_per 4.61 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

213991 (2004 BK42)          Discovered 2004-Jan-21 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ 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
1929-Jan-10 19:33 00:03 Jupiter 1.9810717031732 1.98106977507845 1.98107363126525 2.22313708277969 2.02168816541142 2425622.314558895 2.57469701877607 89.700007205996 22.1394000552202 -79.125516331503 790487.475875233 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
1951-Jun-14 00:55 00:02 Jupiter 1.67522328411399 1.67522255820048 1.67522401012977 1.22838443877634 0.705473577500475 2433811.538017415 1.81699843966203 1424.15952938212 601.832181514198 46.8041253108775 1200346.1801704 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
1973-Dec-02 09:43 00:01 Jupiter 1.89195806874025 1.89195721546172 1.89195892201835 2.31498776400521 2.11276498222551 2442018.904944433 1.18575997936579 154.498894027452 21.6984308501379 80.0744631316042 1385102.0919191 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2012-Jan-22 19:24 < 00:01 Jupiter 1.96321555630621 1.96321498289236 1.96321612971985 2.14806360958928 1.93682323397156 2455949.308650889 0.258422070319099 54.1136713327058 26.1795094995987 -78.2369717077698 1632604.01824603 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2034-Jun-25 22:03 < 00:01 Jupiter 1.67800430319113 1.67800367353616 1.67800493300481 1.20231928532674 0.6603122451145 2464139.418732628 0.565045497165998 1749.61853036141 600.173403484416 43.916297889438 1316830.47533567 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2056-Dec-12 05:28 00:01 Jupiter 1.91602886985467 1.91602785422836 1.91602988548066 2.37569100545962 2.18168832919861 2472344.727809519 1.20053613286774 143.705310859675 20.3322929011723 79.7424008426486 1151297.1977393 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2095-Feb-05 04:47 00:02 Jupiter 1.95038241500107 1.95038099884035 1.95038383116024 2.09615130123563 1.87757278853283 2486278.699568375 2.33316592197975 91.4744594588241 29.3092280608393 -73.2930180106282 982848.984822125 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2117-Jul-09 23:12 00:03 Jupiter 1.67828725279412 1.67828662974034 1.67828787606647 1.17270724181177 0.604857899097864 2494468.467008413 2.85236826831597 2679.8402929764 662.57813263636 37.7359180797714 1333092.33799837 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2139-Dec-27 11:23 00:04 Jupiter 1.92341559848285 1.92341305446249 1.92341814250015 2.39507514898682 2.20355092234539 2502673.974323818 3.53727845809955 148.126920500554 39.1505756087676 74.6753697071721 537535.897231578 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2178-Feb-17 04:10 00:05 Jupiter 1.92840988895518 1.92840703919391 1.9284127387102 2.01284638089604 1.78131503566692 2516605.673843707 4.76024907662658 186.936102081565 37.0814414568993 -62.2545234449822 836000.767297486 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
2200-Jul-24 13:02 00:05 Jupiter 1.67357357498735 1.6735729329153 1.67357421741928 1.12720596863274 0.508292356100882 2524798.043380597 5.18521686704499 5433.78667184752 842.685450353293 27.2979697720831 1270445.94718221 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 23:44:56 2021-Apr-13 23:44
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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