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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
48902 (1998 MP31)
Classification: Main-belt Asteroid          SPK-ID: 2048902
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204620890993664 3.7005e-08  
a 2.217591115557608 6.9754e-09 au
q 1.728696345453583 8.093e-08 au
i 5.353712916621254 3.2834e-06 deg
node 290.4952952395815 4.2664e-05 deg
peri 36.04539380321361 4.3291e-05 deg
M 203.0452845175468 7.6549e-06 deg
tp 2459526.387082913414
(2021-Nov-07.88708291)
2.6224e-05 TDB
period 1206.203644579216
3.30
5.6911e-06
1.558e-08
d
yr
n .2984570653702394 1.4082e-09 deg/d
Q 2.706485885661633 8.5132e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      7896 days (21.62 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:16:09  

Additional Information
 Earth MOID = .720152 au 
 Jupiter MOID = 2.63681 au 
 T_jup = 3.614 
[ 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 14.6   n/a MPO359068  
diameter diameter 3.159 km 0.926 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.44 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.405   0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48902 (1998 MP31)          Discovered 1998-Jun-24 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
2028-Oct-13 21:23 < 00:01 Iris 0.0208343519446515 0.0208331379476926 0.0208355665894109 5.65609986537286 5.65609981658902 2462058.391195379 0.196547302104993 218.167283531031 29.4407908121355 75.8374894473028 102676.617966032 T 27 CATAB v2.0f-lin.ifort 2020-Feb-23 09:16:26 2020-Feb-23 09:16
2129-Jul-25 18:39 < 00:01 Iris 0.0481816171483814 0.0481696044281451 0.048193632345088 5.41718184116718 5.41718181914206 2498867.277428527 0.213377834145927 810.48089047046 45.7327098071528 42.4440383242161 106534.103935817 T 27 CATAB v2.0f-lin.ifort 2020-Feb-23 09:16:26 2020-Feb-23 09:16

Alternate Designations
 1998 MP31 = 2000 AJ50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-26 05:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin