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JPL Small-Body Database Browser
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732 Tjilaki (A912 HK)
Classification: Main-belt Asteroid          SPK-ID: 2000732
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04362436998206738 3.4836e-08  
a 2.456132293253115 7.8842e-09 au
q 2.348985069367337 8.5343e-08 au
i 10.9940471722952 4.6317e-06 deg
node 173.3458065776757 1.9145e-05 deg
peri 64.90026409707019 5.573e-05 deg
M 359.8028165662443 5.2506e-05 deg
tp 2459001.270094433436
(2020-May-31.77009443)
0.00020506 TDB
period 1405.970018660291
3.85
6.7697e-06
1.853e-08
d
yr
n .2560509791972903 1.2329e-09 deg/d
Q 2.563279517138892 8.2281e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      38848 days (106.36 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42702  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:38:28  

Additional Information
 Earth MOID = 1.36243 au 
 Jupiter MOID = 2.42802 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455900.5 (2011-Dec-05.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04448329938123174 3.4748e-08  
q 2.346841340790796 8.5242e-08 au
tp 2456189.506127940842
(2012-Sep-19.00612794)
0.00020084 TDB
node 173.3973667536507 1.9159e-05 deg
peri 65.04684089936544 5.4825e-05 deg
i 10.98930359635644 4.6305e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      38848 days (106.36 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42702  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:38:28  

Additional Information
 Jupiter MOID = 2.42802 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.207429017834656E-15 -2.950217016010023E-15 -1.350143685071745E-12 -2.280029223168664E-15 -3.361059257717049E-13 1.12906177408659E-15
q -2.950217016010023E-15 7.266144569316103E-15 3.294007314548909E-12 4.949879935591403E-15 8.151037789917928E-13 -2.556414594073766E-15
tp -1.350143685071745E-12 3.294007314548909E-12 4.033539768926432E-8 1.426310988647847E-12 1.032690550426809E-8 -7.708779003232088E-13
node -2.280029223168664E-15 4.949879935591403E-15 1.426310988647847E-12 3.670672903139062E-10 -3.592685830625289E-10 5.316015877209074E-13
peri -3.361059257717049E-13 8.151037789917928E-13 1.032690550426809E-8 -3.592685830625289E-10 3.005732119338878E-9 -7.345193740740161E-13
i 1.12906177408659E-15 -2.556414594073766E-15 -7.708779003232088E-13 5.316015877209074E-13 -7.345193740740161E-13 2.144173085888541E-11

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 10.5   n/a MPO365251  
diameter diameter 29.791 km 0.431 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.34 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Florczak, M.; Dotto, E.; Barucci, M.A.; Birlan, M.; et al. (1997) Planet. Space Sci. 45, 1423-1435.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.138   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

732 Tjilaki (A912 HK)          Discovered 1912-Apr-15 by Massinger, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
2010-Feb-14 14:45 < 00:01 Psych 0.0493129574314064 0.0493120610148353 0.0493138538497994 3.51851283411875 3.51851276438662 2455242.114649788 0.507556845530696 48.3599562221143 26.50994044684 27.3275826765798 186023.982645597 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 17:38:59 2020-Jan-28 17:39

Alternate Designations
 A912 HK = 1958 FC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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