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JPL Small-Body Database Browser
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49836 (1999 XD85)
Classification: Main-belt Asteroid          SPK-ID: 2049836
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1109977353944273 3.306e-08  
a 2.378246281718051 1.0132e-08 au
q 2.11426633023713 7.5913e-08 au
i 3.349014566572215 3.551e-06 deg
node 120.0753258825307 8.3476e-05 deg
peri 357.388746085804 8.7416e-05 deg
M 193.2369472892753 2.5777e-05 deg
tp 2459621.056033232609
(2022-Feb-10.55603323)
9.7102e-05 TDB
period 1339.626304102624
3.67
8.5605e-06
2.344e-08
d
yr
n .268731659640823 1.7173e-09 deg/d
Q 2.642226233198972 1.1256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      9169 days (25.10 yr)  
   first obs. used      1994-07-11  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54815  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:17:14  

Additional Information
 Earth MOID = 1.13047 au 
 Jupiter MOID = 2.42319 au 
 T_jup = 3.529 
[ 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 15.4   n/a MPO337656  

49836 (1999 XD85)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/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
1932-Jan-11 15:08 < 00:01 Iris 0.0491744050597956 0.0491620724435942 0.049186737713586 5.33216036298115 5.3321603410566 2426718.130770605 0.845621047354947 618.586013500747 52.3728210457934 6.3528226115499 19518.3017355472 T 20 CATAB v2.0f-lin.ifort 2019-Sep-24 02:17:19 2019-Sep-24 02:17
1935-Sep-16 10:48 < 00:01 Iris 0.0360868559998541 0.0360752952059423 0.0360984169723515 4.78748192884839 4.78748189557348 2428061.949843224 0.966446491617808 590.072692514768 51.0347861662869 -12.4702118224852 24515.1819092909 T 20 CATAB v2.0f-lin.ifort 2019-Sep-24 02:17:19 2019-Sep-24 02:17
2075-Mar-13 20:42 < 00:01 Eunom 0.0267313406259145 0.0267245423017659 0.026738141121942 6.0452545786573 6.04525449178955 2479010.362399350 0.425585690046689 511.069190207966 40.4608311878004 -48.6634072248202 74352.752799885 T 20 CATAB v2.0f-lin.ifort 2019-Sep-24 02:17:19 2019-Sep-24 02:17

Alternate Designations
 1999 XD85 = 1994 NP6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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