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121514 (1999 UJ7)
Classification: Mars-crossing Asteroid          SPK-ID: 2121514
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0391372132416325 5.4424e-08  
a 1.524401921451531 3.3447e-09 au
q 1.464741078385728 8.1478e-08 au
i 16.74912618529181 4.4156e-06 deg
node 347.3528647252207 1.3819e-05 deg
peri 48.4958572180827 8.1943e-05 deg
M 347.6132025314802 7.5414e-05 deg
tp 2459024.153978299735
(2020-Jun-23.65397830)
0.00014399 TDB
period 687.4603552327253
1.88
2.2626e-06
6.195e-09
d
yr
n .5236665609293638 1.7235e-09 deg/d
Q 1.584062764517334 3.4756e-09 au
  Orbit Determination Parameters
   # obs. used (total)      904  
   data-arc span      23953 days (65.58 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4159  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:49:31  

Additional Information
 Earth MOID = .475936 au 
 Jupiter MOID = 3.4904 au 
 T_jup = 4.449 
[ 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 17.2   n/a MPO469261  
diameter diameter 2.451 km 0.486 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 46.46 h n/a LCDB (Rev. 2019-August); 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:
[Borisov, G.; Christou, A.A.; Colas, F.; Banulo, S.; et al. (2018) Astron. Astrophys. 618, A178.]
geometric albedo albedo 0.047   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

121514 (1999 UJ7)          Discovered 1999-Oct-30 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ 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
1901-Sep-17 08:28 < 00:01 Earth 0.475330727917549 0.475330451309022 0.475331004526237 9.1836056956701 9.1829952912483 2415644.852836775 0.518436979357 253.729889054552 13.7701657987113 -89.8207777685818 3950046.37368159 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1916-Aug-29 22:36 < 00:01 Earth 0.491582596268906 0.491581798669419 0.49158339389709 9.16366563071479 9.1630741226903 2421105.441749307 0.447324545701817 204.747477042051 14.3822605817307 79.5389257308522 3971821.67846828 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1933-Sep-20 01:16 < 00:01 Earth 0.476756989544973 0.476756702765573 0.476757276326134 9.14478076219622 9.14416959997248 2427335.552914311 0.374602559204074 181.723425182504 13.8366231569744 -88.8575270878682 3923473.9658888 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1948-Sep-01 06:54 < 00:01 Earth 0.487414958871587 0.487414407135118 0.487415510619056 9.19569438507611 9.19509989718602 2432795.787549914 0.297174639994769 138.974912169586 14.576695618279 80.2797368065847 3894344.88666871 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1965-Sep-22 01:06 < 00:01 Earth 0.478702005930165 0.478701720737821 0.478702291122753 9.10786014884278 9.10724900234542 2439025.546157685 0.228710692541932 110.125221103789 14.0396033295495 -88.8121526945124 3866136.38953787 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1980-Sep-02 21:52 < 00:01 Earth 0.484779307259288 0.484778929177658 0.484779685342351 9.2075860683215 9.20698912022151 2444485.411343963 0.152478121211674 72.1882747830672 15.1143977180484 80.8133788401585 3756305.85360822 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
1997-Sep-23 07:49 < 00:01 Earth 0.480071368540901 0.480071069446462 0.480071667635341 9.07445359259441 9.07384194579995 2450714.826009066 0.0863333370644587 42.7087438336822 14.8963413506842 -88.9607847947266 3688845.20558257 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2012-Sep-03 19:55 < 00:01 Earth 0.483769213569606 0.483768943908369 0.483769483231035 9.207098267916 9.20650004167322 2456174.330038461 0.0518591816632176 32.283345829173 11.4392743354799 -76.4607186501473 4888255.0327792 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2029-Sep-23 21:53 < 00:01 Earth 0.48068874662811 0.480688390273842 0.480689102983225 9.05429406603672 9.05368184466043 2462403.412083620 0.100255240916136 46.7058014350667 11.949366578612 -73.0649267956923 4636533.37676308 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2044-Sep-04 02:58 < 00:01 Earth 0.483476353261862 0.483476110464141 0.483476596059583 9.21138409693037 9.21078578683362 2467862.623524357 0.166118341242919 84.897010664514 12.0980297815006 -89.6811971001549 4639961.77491634 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2061-Sep-23 22:20 < 00:01 Earth 0.48089075917729 0.480890313765914 0.480891204595663 9.05893058853323 9.0583189375829 2474091.430366273 0.247652741700119 113.95872170039 12.7398136150377 -80.7542331947833 4288669.65284476 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2076-Sep-03 22:03 < 00:01 Earth 0.483904923543723 0.483904614254494 0.483905232838811 9.21802840306166 9.21743105378004 2479550.418549753 0.309436249549544 153.29656408168 12.8627126722444 86.8061777043672 4371851.32853781 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2093-Sep-23 12:02 < 00:01 Earth 0.480222678938994 0.480222146252311 0.480223211646777 9.07937910993735 9.07876798760247 2485779.001376848 0.39458876909449 183.933621849792 13.0136398931559 -82.7484356882444 4191628.59223847 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2108-Sep-04 09:05 < 00:01 Earth 0.485113685731491 0.485113239691395 0.485114131797729 9.21914821716057 9.21855242872927 2491237.878525277 0.450683378776025 221.187058173484 13.1448894944343 85.338373058902 4298899.05059334 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2125-Sep-23 18:17 < 00:01 Earth 0.479412002239147 0.479411411352921 0.479412593167585 9.09753897658301 9.09692804284126 2497466.261659634 0.53729577105591 252.343828048389 13.1413197924016 -83.9921858076978 4155139.49003476 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2140-Sep-03 13:23 < 00:01 Earth 0.48670935152968 0.486708721791418 0.486709981322776 9.20028480028899 9.19968974757628 2502925.057294384 0.591745891342816 286.099763953062 13.3043403502455 84.2871736955389 4264790.47823612 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2157-Sep-22 20:05 < 00:01 Earth 0.4785297442447 0.478529120538165 0.478530368019918 9.10714001662992 9.1065286017779 2509153.336562083 0.674098475227164 317.51473539068 13.2431523489163 -84.9099659299007 4124794.50642993 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2172-Sep-02 14:24 < 00:01 Earth 0.4886948577513 0.488694029285367 0.48869568630282 9.18437722209096 9.18378356055562 2514612.100346314 0.722894827249224 343.381784645531 13.38216412862 83.4585019391758 4248562.85716583 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49
2189-Sep-21 21:55 < 00:01 Earth 0.477786820041039 0.477786192779507 0.477787447398659 9.12340232460861 9.12279105062278 2520840.413053834 0.788004059788104 374.735818725493 13.3124286362166 -85.6645699776408 4102972.04904082 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:49:33 2020-Nov-12 17:49

Alternate Designations
 1999 UJ7 = 2002 AC180 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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