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18042 (1999 RF27)
Classification: Main-belt Asteroid          SPK-ID: 2018042
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2506086849523347 3.4525e-08  
a 2.610960845950075 1.1493e-08 au
q 1.956631381884491 8.7264e-08 au
i 8.038097869873024 4.6799e-06 deg
node 140.4368830875673 2.6721e-05 deg
peri 71.20861618080073 2.8552e-05 deg
M 114.6505029288647 1.126e-05 deg
tp 2458509.736303432330
(2019-Jan-26.23630343)
4.6441e-05 TDB
period 1540.986966921372
4.22
1.0175e-05
2.786e-08
d
yr
n .2336165118380062 1.5426e-09 deg/d
Q 3.265290310015659 1.4374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1674  
   data-arc span      25383 days (69.49 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5049  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:17:24  

Additional Information
 Earth MOID = .96932 au 
 Jupiter MOID = 1.75267 au 
 T_jup = 3.351 
[ 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 13.4   n/a MPO439218  
diameter diameter 7.556 km 2.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 7.2998 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.135   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

18042 (1999 RF27)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20001013/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
1928-Feb-16 21:01 00:02 Jupiter 1.7564852129001 1.75648468759571 1.75648573820379 1.49665022596325 1.12938490606555 2425293.375726201 1.60448326550672 246.368190674395 132.964415121024 -30.9596423266226 1160681.04933527 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
1941-Jun-15 10:13 00:01 Jupiter 1.98255193135728 1.98255068488528 1.9825531778233 1.26625343559801 0.86540208034068 2430160.925888137 1.43727894366914 698.558909014554 139.487599378601 -10.4607785871533 771143.114467529 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
1986-Dec-13 23:25 < 00:01 Jupiter 1.88756600944454 1.88756547823096 1.88756654065791 2.03616260870457 1.80235464157225 2446778.476034144 0.548549578709971 64.9979817094805 34.7651051962395 -74.2108999449349 1663447.65985163 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2000-Apr-03 13:06 < 00:01 Jupiter 1.81133234406499 1.81133187639443 1.81133281173557 0.789704336961375 n/a 2451638.045723047 0.310882864547685 59.1220057518559 23.0459354527132 -86.24016773066 11733316.9199366 F 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2059-Jan-28 02:06 < 00:01 Jupiter 1.73741543491026 1.73741507923781 1.73741579075731 1.01430073232465 0.231880516058352 2473121.587270455 0.875747327111098 22767.6096333122 680.59525933245 -14.2785357318549 8881326.73998266 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2117-Nov-25 00:48 00:02 Jupiter 1.7828730747887 1.78287219035017 1.78287395922512 1.46697668740053 1.0962862663555 2494606.533573570 1.98585646143714 331.190018315685 104.271995740271 -20.3971660964406 965394.752752269 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2131-Mar-24 02:50 00:02 Jupiter 1.9401693232186 1.94016785193352 1.94017079450059 1.11320073755723 0.605039669405187 2499473.618129067 2.3463302137053 2449.80976333473 253.996684403829 -9.87353420204335 865107.645899935 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2176-Sep-18 23:35 00:03 Jupiter 1.93210102580242 1.93209886372961 1.93210318787512 2.11233833353478 1.893458259592 2516089.482594349 3.10055723845867 164.848788486973 31.0696972618554 86.7199243855452 1092464.77224717 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17
2190-Jan-11 12:36 00:03 Jupiter 1.78802024479236 1.78801902503373 1.78802146455194 0.672940958072792 n/a 2520952.025236662 3.41152769190569 96.1551236429789 29.6148630691802 -54.4964340589499 7525854.09785763 F 28 CATAB v2.0f-lin.ifort 2020-Aug-25 01:17:37 2020-Aug-25 01:17

Alternate Designations
 1999 RF27 = 1989 ET11 = 1998 MR26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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