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 ]  
74854 (1999 TT78)
Classification: Main-belt Asteroid          SPK-ID: 2074854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1409419367269141 3.4805e-08  
a 2.389848866916274 9.0365e-09 au
q 2.053018939128473 8.377e-08 au
i 2.12708393493787 3.6465e-06 deg
node 46.04096260995459 0.00010924 deg
peri 182.1112396879625 0.00011044 deg
M 344.8114129699881 1.5561e-05 deg
tp 2459057.433640657578
(2020-Jul-26.93364066)
5.8283e-05 TDB
period 1349.44156399991
3.69
7.6538e-06
2.095e-08
d
yr
n .2667770206609881 1.5131e-09 deg/d
Q 2.726678794704074 1.031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      9626 days (26.35 yr)  
   first obs. used      1994-03-05  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58352  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:05  

Additional Information
 Earth MOID = 1.04305 au 
 Jupiter MOID = 2.25666 au 
 T_jup = 3.518 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457557.5 (2016-Jun-18.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1414919340768831 3.4795e-08  
q 2.052389526786808 8.3862e-08 au
tp 2457706.622665070346
(2016-Nov-14.12266507)
5.9522e-05 TDB
node 46.05052662048451 0.00010922 deg
peri 181.8341692807014 0.00011041 deg
i 2.127488453558889 3.6465e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      9626 days (26.35 yr)  
   first obs. used      1994-03-05  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58352  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:05  

Additional Information
 Jupiter MOID = 2.25666 au 
 T_jup = 3.518 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.210699453213103E-15 -2.905551640945302E-15 -6.332691631744265E-13 -6.095437439690389E-15 -1.207264872887093E-13 -2.594915620077317E-16
q -2.905551640945302E-15 7.032890000474963E-15 1.399409365654488E-12 1.402378615146526E-14 2.546476837096866E-13 6.057926560319681E-16
tp -6.332691631744265E-13 1.399409365654488E-12 3.542909666817218E-9 5.949582013138856E-12 9.741063200619906E-10 9.509034536413695E-13
node -6.095437439690389E-15 1.402378615146526E-14 5.949582013138856E-12 1.192977047825867E-8 -1.191995578612538E-8 -1.16834005146148E-10
peri -1.207264872887093E-13 2.546476837096866E-13 9.741063200619906E-10 -1.191995578612538E-8 1.219062238358859E-8 1.170186864052913E-10
i -2.594915620077317E-16 6.057926560319681E-16 9.509034536413695E-13 -1.16834005146148E-10 1.170186864052913E-10 1.329718009434105E-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 16.1   n/a MPO379111  

74854 (1999 TT78)          Discovered 1999-Oct-11 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT78 = 1998 KF57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-20 01:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin