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18047 (1999 RP145)
Classification: Main-belt Asteroid          SPK-ID: 2018047
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1369765958335772 4.0201e-08  
a 3.199682970631757 2.1611e-08 au
q 2.761401289567952 1.3179e-07 au
i 13.71138436017669 4.6224e-06 deg
node 321.4254919645239 1.5358e-05 deg
peri 346.5922971534185 2.1521e-05 deg
M 277.224823302044 1.7132e-05 deg
tp 2459681.180459283466
(2022-Apr-11.68045928)
0.00010108 TDB
period 2090.541781305804
5.72
2.1179e-05
5.798e-08
d
yr
n .1722041641163158 1.7446e-09 deg/d
Q 3.637964651695563 2.4571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1916  
   data-arc span      11463 days (31.38 yr)  
   first obs. used      1989-11-02  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:39:51  

Additional Information
 Earth MOID = 1.74702 au 
 Jupiter MOID = 1.6748 au 
 T_jup = 3.136 
[ 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 12.64   n/a E2021B10  
diameter diameter 11.696 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.628 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.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.129   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18047 (1999 RP145)          Discovered 1999-Sep-09 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
1956-Jul-10 02:15 00:02 Jupiter 1.9963039823871 1.99630234815751 1.99630561664313 4.29562314485446 4.19568677195598 2435664.593994899 2.34826138977655 455.02080999699 44.2660834557522 -81.4829831567514 2826560.15143615 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
1967-Sep-26 18:15 00:02 Jupiter 1.79863825908349 1.7986373120783 1.79863920608867 4.13131818335742 4.01571180225202 2439760.260420399 1.75746952943845 255.376611936491 45.269600423995 -88.9856217516338 2928836.33643786 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
1978-Dec-27 19:15 00:01 Jupiter 1.70503407157474 1.70503363285522 1.70503451029426 3.87288361380589 3.74241533605056 2443870.301789480 1.27599947805087 231.185709179579 19.4519185006354 -89.0843677984677 3565125.07666629 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
1990-Mar-21 01:53 < 00:01 Jupiter 1.73193682878213 1.73193633515548 1.73193732241027 3.43879788891625 3.29351016473702 2447971.578647231 0.920192087938133 135.588093367128 15.1289547584138 -81.7547124746957 3012893.28980949 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2001-Apr-29 13:06 < 00:01 Jupiter 1.86876941563798 1.86876882286909 1.86877000840708 2.69432440265061 2.52049221749715 2452029.045894316 0.62457997113839 60.3396057322563 22.1042879007907 -66.2144002792676 2632962.83730449 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2134-Feb-21 00:52 00:03 Jupiter 1.85702281713072 1.85702127362302 1.85702436064242 4.11265346628804 4.00021017956053 2500538.536314150 2.76870120494145 317.6211667342 66.8191395026088 -83.3232808160279 2407511.68756039 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2145-May-22 19:12 00:03 Jupiter 1.71972007939007 1.71971925424681 1.71972090454594 4.01877621628545 3.89428967401243 2504647.299760457 3.03189595748346 379.871813375767 31.2535907883546 86.6041534993744 3615463.02133607 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2156-Aug-25 03:27 00:04 Jupiter 1.70155334297338 1.70155270847339 1.70155397751979 3.79897140333773 3.6655963158354 2508759.643980489 3.62530770311224 542.984388596113 14.2651594332854 -86.5110767084101 3491772.73427434 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2167-Nov-01 19:26 00:05 Jupiter 1.80738965549488 1.80738770606303 1.80739160496403 3.35157986900096 3.2087068118262 2512845.309684695 4.81383441755909 437.72074724061 14.4374772837046 -74.7256948855731 3118405.62398562 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40
2178-Nov-11 02:20 00:06 Jupiter 1.99265411747366 1.99265170806207 1.99265652688762 2.7881168801064 2.63124508421256 2516872.597217836 6.45935725116473 166.881516733117 24.9038764203969 -37.9737663529332 3746835.59295375 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:40:14 2021-May-04 02:40

Alternate Designations
 1999 RP145 = 1991 CK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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