Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
102473 (1999 TW244)
Classification: Main-belt Asteroid          SPK-ID: 2102473
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3037543809860164 3.7753e-08  
a 2.67190647817976 1.578e-08 au
q 1.86030317984774 9.9282e-08 au
i 12.45447735226259 3.9293e-06 deg
node 189.4890434778695 2.0249e-05 deg
peri 271.006761717879 2.0996e-05 deg
M 250.6109221566854 6.796e-06 deg
tp 2459685.232084525673
(2022-Apr-15.73208453)
3.2133e-05 TDB
period 1595.255704405842
4.37
1.4132e-05
3.869e-08
d
yr
n .2256691507234466 1.9992e-09 deg/d
Q 3.48350977651178 2.0573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      7602 days (20.81 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53216  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:42:09  

Additional Information
 Earth MOID = .924753 au 
 Jupiter MOID = 1.92839 au 
 T_jup = 3.281 
[ 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 15.61   n/a E2021B55  
diameter diameter 4.195 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102473 (1999 TW244)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1937-Apr-01 22:59 00:02 Jupiter 1.94856847147156 1.94856794863946 1.9485689943066 0.270777336467034 n/a 2428625.457805427 2.12010564161606 373.933377322958 24.6991703949976 88.7180666894389 11796240.4836895 F 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:11 2021-Apr-13 15:42
2020-Feb-14 15:23 < 00:01 Jupiter 1.96106354969676 1.96106304215783 1.96106405723596 0.357418173133195 n/a 2458894.141235439 0.263260903737329 370.932869677832 25.187029426124 -89.6158954709285 11644591.5257041 F 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:11 2021-Apr-13 15:42
2068-Sep-22 19:41 00:01 Jupiter 1.96674901342598 1.96674844428819 1.96674958256635 2.15671556403987 1.94681259107747 2476647.319923184 1.39416476156094 205.380776949379 47.4462350055844 -78.7013590921849 1364113.33878677 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:11 2021-Apr-13 15:42
2102-Dec-28 03:20 00:02 Jupiter 1.99680859914964 1.99680759434324 1.99680960395927 0.565754884436423 n/a 2489160.639029631 2.37021214397397 288.513180901957 44.866325581596 85.5109407514104 6636434.58864897 F 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:11 2021-Apr-13 15:42
2151-Aug-09 15:19 00:04 Jupiter 1.93501931550574 1.93501857160785 1.93502005943344 1.90896499424892 1.66393528258414 2506917.138456401 3.54049302867624 564.288657867359 75.7258859321237 -68.1276839956612 1212852.15547223 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:42:11 2021-Apr-13 15:42

Alternate Designations
 1999 TW244 = 2001 HW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 00:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin